Q: Is 721,402 a Prime Number?
A: No, 721,402 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 721402 can be evenly divided by 1 2 11 22 121 242 271 542 1,331 2,662 2,981 5,962 32,791 65,582 360,701 and 721,402, with no remainder.
Since 721,402 cannot be divided by just 1 and 721,402, it is not a prime number.