Q: Is 421,371 a Prime Number?
A: No, 421,371 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 421371 can be evenly divided by 1 3 9 46,819 140,457 and 421,371, with no remainder.
Since 421,371 cannot be divided by just 1 and 421,371, it is not a prime number.