Q: Is 1,242,105 a Prime Number?
A: No, 1,242,105 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 1242105 can be evenly divided by 1 3 5 15 17 51 85 255 4,871 14,613 24,355 73,065 82,807 248,421 414,035 and 1,242,105, with no remainder.
Since 1,242,105 cannot be divided by just 1 and 1,242,105, it is not a prime number.