Q: Is 1,242,315 a Prime Number?
A: No, 1,242,315 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 1242315 can be evenly divided by 1 3 5 9 15 19 45 57 95 171 285 855 1,453 4,359 7,265 13,077 21,795 27,607 65,385 82,821 138,035 248,463 414,105 and 1,242,315, with no remainder.
Since 1,242,315 cannot be divided by just 1 and 1,242,315, it is not a prime number.