Q: Is 421,138 a Prime Number?
A: No, 421,138 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 421138 can be evenly divided by 1 2 29 53 58 106 137 274 1,537 3,074 3,973 7,261 7,946 14,522 210,569 and 421,138, with no remainder.
Since 421,138 cannot be divided by just 1 and 421,138, it is not a prime number.