Q: Is 842,257 a Prime Number?
A: No, 842,257 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 842257 can be evenly divided by 1 13 67 871 967 12,571 64,789 and 842,257, with no remainder.
Since 842,257 cannot be divided by just 1 and 842,257, it is not a prime number.