Q: Is 1,240,521 a Prime Number?
A: No, 1,240,521 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1240521 can be evenly divided by 1 3 389 1,063 1,167 3,189 413,507 and 1,240,521, with no remainder.
Since 1,240,521 cannot be divided by just 1 and 1,240,521, it is not a prime number.