Q: Is 1,128,123 a Prime Number?
A: No, 1,128,123 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 1128123 can be evenly divided by 1 3 9 163 489 769 1,467 2,307 6,921 125,347 376,041 and 1,128,123, with no remainder.
Since 1,128,123 cannot be divided by just 1 and 1,128,123, it is not a prime number.