Q: Is 720,342 a Prime Number?
A: No, 720,342 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 720342 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 5,717 11,434 17,151 34,302 40,019 51,453 80,038 102,906 120,057 240,114 360,171 and 720,342, with no remainder.
Since 720,342 cannot be divided by just 1 and 720,342, it is not a prime number.