07/03/2013 - True Number (**)

This puzzle is rated 2 star (medium).

Description

I am thinking of a 6-digit number. The sum of the digits is 43. 

And only two of the following three statements about the number are true: 

1. It's a square number,
2. It's a cube number, and
3. The number is under 500000.

Puzzle
What is the number?

Check the solutions page for the correct answer.