No, it is not correct, it should be hundreds of thousands of people.
Hundreds of thousands of people! Answer hundreds and thousands of people Answer As you can see, both alternatives are used, and probably they are equally correct. I would tend to use "of". You may have heard people say "tens of thousands", and this is correct usage as well. The idea is that "tens" and "hundreds" are ways to give a rough idea of scale. I could say "There are thousands of people in New York City." "Thousands" is not entirely wrong; there are in fact many, many thousands of people there (a thousand thousands for each million). But thousands isn't the best estimate of magnitude. If I say "thousands", I mean a few thousand, maybe even a few more than 10. But if I say "tens of thousands", I mean, perhaps, 30, 40, 50, 60 thousand. Thousands, around the order of magnitude "10". Hundreds and thousands, to my ear, does not convey the same general magnitude of size. Of course, there is nothing even remotely accurate about these estimates, but they help us grasp what the speaker is attempting to convey. Hundreds and thousands means multiples of hundreds (100s) and/or thousands (1000s). But hundreds of thousands (100000s) means multiples of a much bigger number indeed. So both are correct expressions but they convey the idea of quite different sizes of number.
Haight- Ashburg was the rock festival that drew hundreds of thousands of people in 1969.
Hundreds of thousands of years.
Hundreds of thousands.
Thousands and hundreds people go on wikianswers
Hundreds of thousands.
Hundreds it not thousands, or millions of people enjoy thrillers.
hundreds and thousands!!
In the US, hundreds of thousands.
loads, hundreds of thousands <><><> In ALL wars, hundreds of MILLIONS would be more accurate.
Thousands and Thousands of people. Hundreds on a daily basis.
hundreds of thousands people died.
Hundreds if Thousands, maybe millions
Hundreds of thousands of British people and many from other countries.
Hundreds of thousands - Rakin
Hundreds and hundreds of people over hundreds and hundreds of years
Earthquakes do. So far in the twenty-first century, tornadoes have killed hundreds of people. Earthquakes have killed hundreds of thousands.
Hundreds of thousands of people have migrated to Scandinavia over history.
Over hundreds of thousands of people in America have the name "Justin."
hundreds and thousands of people