Q: Is 1,321,520 a Prime Number?
A: No, 1,321,520 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 1321520 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 16,519 33,038 66,076 82,595 132,152 165,190 264,304 330,380 660,760 and 1,321,520, with no remainder.
Since 1,321,520 cannot be divided by just 1 and 1,321,520, it is not a prime number.