Q: Is 1,724,420 a Prime Number?
A: No, 1,724,420 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 1724420 can be evenly divided by 1 2 4 5 10 20 151 302 571 604 755 1,142 1,510 2,284 2,855 3,020 5,710 11,420 86,221 172,442 344,884 431,105 862,210 and 1,724,420, with no remainder.
Since 1,724,420 cannot be divided by just 1 and 1,724,420, it is not a prime number.