Q: Is 1,242,642 a Prime Number?
A: No, 1,242,642 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 1242642 can be evenly divided by 1 2 3 6 71 142 213 426 2,917 5,834 8,751 17,502 207,107 414,214 621,321 and 1,242,642, with no remainder.
Since 1,242,642 cannot be divided by just 1 and 1,242,642, it is not a prime number.