Q: Is 421,957 a Prime Number?
A: No, 421,957 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 421957 can be evenly divided by 1 17 24,821 and 421,957, with no remainder.
Since 421,957 cannot be divided by just 1 and 421,957, it is not a prime number.