Q: Is 1,242,605 a Prime Number?
A: No, 1,242,605 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 1242605 can be evenly divided by 1 5 7 13 35 65 91 455 2,731 13,655 19,117 35,503 95,585 177,515 248,521 and 1,242,605, with no remainder.
Since 1,242,605 cannot be divided by just 1 and 1,242,605, it is not a prime number.