Q: Is 421,690 a Prime Number?
A: No, 421,690 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 421690 can be evenly divided by 1 2 5 10 42,169 84,338 210,845 and 421,690, with no remainder.
Since 421,690 cannot be divided by just 1 and 421,690, it is not a prime number.