Q: Is 1,221,040 a Prime Number?
A: No, 1,221,040 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 1221040 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 15,263 30,526 61,052 76,315 122,104 152,630 244,208 305,260 610,520 and 1,221,040, with no remainder.
Since 1,221,040 cannot be divided by just 1 and 1,221,040, it is not a prime number.