Q: Is 420,685 a Prime Number?
A: No, 420,685 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 420685 can be evenly divided by 1 5 84,137 and 420,685, with no remainder.
Since 420,685 cannot be divided by just 1 and 420,685, it is not a prime number.