Q: Is 420,957 a Prime Number?
A: No, 420,957 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 420957 can be evenly divided by 1 3 9 27 81 5,197 15,591 46,773 140,319 and 420,957, with no remainder.
Since 420,957 cannot be divided by just 1 and 420,957, it is not a prime number.