Q: Is 856,142 a Prime Number?
A: No, 856,142 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 856142 can be evenly divided by 1 2 7 14 61,153 122,306 428,071 and 856,142, with no remainder.
Since 856,142 cannot be divided by just 1 and 856,142, it is not a prime number.