Q: Is 421,879 a Prime Number?
A: No, 421,879 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 421879 can be evenly divided by 1 31 439 961 13,609 and 421,879, with no remainder.
Since 421,879 cannot be divided by just 1 and 421,879, it is not a prime number.