Q: Is 243,142 a Prime Number?
A: No, 243,142 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 243142 can be evenly divided by 1 2 121,571 and 243,142, with no remainder.
Since 243,142 cannot be divided by just 1 and 243,142, it is not a prime number.