Q: Is 1,125,728 a Prime Number?
A: No, 1,125,728 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 1125728 can be evenly divided by 1 2 4 8 16 32 127 254 277 508 554 1,016 1,108 2,032 2,216 4,064 4,432 8,864 35,179 70,358 140,716 281,432 562,864 and 1,125,728, with no remainder.
Since 1,125,728 cannot be divided by just 1 and 1,125,728, it is not a prime number.