Q: Is 123,456 a Prime Number?
A: No, 123,456 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 123456 can be evenly divided by 1 2 3 4 6 8 12 16 24 32 48 64 96 192 643 1,286 1,929 2,572 3,858 5,144 7,716 10,288 15,432 20,576 30,864 41,152 61,728 and 123,456, with no remainder.
Since 123,456 cannot be divided by just 1 and 123,456, it is not a prime number.