Q: Is 1,720,542 a Prime Number?
A: No, 1,720,542 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 1720542 can be evenly divided by 1 2 3 6 139 278 417 834 2,063 4,126 6,189 12,378 286,757 573,514 860,271 and 1,720,542, with no remainder.
Since 1,720,542 cannot be divided by just 1 and 1,720,542, it is not a prime number.