Q: Is 2,121,724 a Prime Number?
A: No, 2,121,724 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 2121724 can be evenly divided by 1 2 4 11 22 44 48,221 96,442 192,884 530,431 1,060,862 and 2,121,724, with no remainder.
Since 2,121,724 cannot be divided by just 1 and 2,121,724, it is not a prime number.