Q: Is 1,397,820 a Prime Number?
A: No, 1,397,820 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 1397820 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 23,297 46,594 69,891 93,188 116,485 139,782 232,970 279,564 349,455 465,940 698,910 and 1,397,820, with no remainder.
Since 1,397,820 cannot be divided by just 1 and 1,397,820, it is not a prime number.