Q: Is 420,435 a Prime Number?
A: No, 420,435 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 420435 can be evenly divided by 1 3 5 9 15 45 9,343 28,029 46,715 84,087 140,145 and 420,435, with no remainder.
Since 420,435 cannot be divided by just 1 and 420,435, it is not a prime number.