Q: Is 1,397,740 a Prime Number?
A: No, 1,397,740 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 1397740 can be evenly divided by 1 2 4 5 10 17 20 34 68 85 170 340 4,111 8,222 16,444 20,555 41,110 69,887 82,220 139,774 279,548 349,435 698,870 and 1,397,740, with no remainder.
Since 1,397,740 cannot be divided by just 1 and 1,397,740, it is not a prime number.