Q: Is 561,420 a Prime Number?
A: No, 561,420 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 561420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 3,119 6,238 9,357 12,476 15,595 18,714 28,071 31,190 37,428 46,785 56,142 62,380 93,570 112,284 140,355 187,140 280,710 and 561,420, with no remainder.
Since 561,420 cannot be divided by just 1 and 561,420, it is not a prime number.