Q: Is 421,961 a Prime Number?
A: No, 421,961 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 421961 can be evenly divided by 1 509 829 and 421,961, with no remainder.
Since 421,961 cannot be divided by just 1 and 421,961, it is not a prime number.