Q: Is 666,342 a Prime Number?
A: No, 666,342 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 666342 can be evenly divided by 1 2 3 6 9 18 37,019 74,038 111,057 222,114 333,171 and 666,342, with no remainder.
Since 666,342 cannot be divided by just 1 and 666,342, it is not a prime number.