Q: Is 1,242,728 a Prime Number?
A: No, 1,242,728 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 1242728 can be evenly divided by 1 2 4 8 31 62 124 248 5,011 10,022 20,044 40,088 155,341 310,682 621,364 and 1,242,728, with no remainder.
Since 1,242,728 cannot be divided by just 1 and 1,242,728, it is not a prime number.