Lucario's pokedex number in the National Pokedex is 448.
#448
448
Landorus is #645 in the national pokedex, and it is a Ground-Flying type Pokemon.
Lucario is a Pokemon that is fighting and steel type. It's National Pokedex #448 and Sinnoh #116.
If you mean on the national pokedex, there is a VERY long list. In Sinnoh Dex, unknown and riolu (baby lucario)
In the National Pokedex Muchlax is number 446.446
Growlithe is number 58 on the national pokedex.
Gyarados is #130 in the National Pokedex.
Croconaw is number 159 in the National Pokedex.
Eevee's number in the national Pokedex is #133. If you don't know what the Pokemon's number is then go to pokemondb.net/pokedex/national It is a great site to find Pokemon's number!!
Sceptile is number 3 in the Hoenn Pokedex and number 254 in the National Pokedex.