Q: Is 139,640 a Prime Number?
A: No, 139,640 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 139640 can be evenly divided by 1 2 4 5 8 10 20 40 3,491 6,982 13,964 17,455 27,928 34,910 69,820 and 139,640, with no remainder.
Since 139,640 cannot be divided by just 1 and 139,640, it is not a prime number.