Q: Is 42,157 a Prime Number?
A: Yes, 42,157 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 42157 can be evenly divided by 1 and 42,157, with no remainder.
Since 42,157 can be divided by just 1 and 42,157, it is a prime number.