Q: Is 1,218,642 a Prime Number?
A: No, 1,218,642 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 1218642 can be evenly divided by 1 2 3 6 197 394 591 1,031 1,182 2,062 3,093 6,186 203,107 406,214 609,321 and 1,218,642, with no remainder.
Since 1,218,642 cannot be divided by just 1 and 1,218,642, it is not a prime number.