Q: Is 422,491 a Prime Number?
A: No, 422,491 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 422491 can be evenly divided by 1 647 653 and 422,491, with no remainder.
Since 422,491 cannot be divided by just 1 and 422,491, it is not a prime number.