Q: Is 1,242,357 a Prime Number?
A: No, 1,242,357 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 1242357 can be evenly divided by 1 3 199 597 2,081 6,243 414,119 and 1,242,357, with no remainder.
Since 1,242,357 cannot be divided by just 1 and 1,242,357, it is not a prime number.