Q: Is 1,708,420 a Prime Number?
A: No, 1,708,420 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 1708420 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 12,203 24,406 48,812 61,015 85,421 122,030 170,842 244,060 341,684 427,105 854,210 and 1,708,420, with no remainder.
Since 1,708,420 cannot be divided by just 1 and 1,708,420, it is not a prime number.