Q: Is 1,121,780 a Prime Number?
A: No, 1,121,780 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 1121780 can be evenly divided by 1 2 4 5 10 11 20 22 44 55 110 220 5,099 10,198 20,396 25,495 50,990 56,089 101,980 112,178 224,356 280,445 560,890 and 1,121,780, with no remainder.
Since 1,121,780 cannot be divided by just 1 and 1,121,780, it is not a prime number.