Q: Is 421,020 a Prime Number?
A: No, 421,020 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 421020 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 2,339 4,678 7,017 9,356 11,695 14,034 21,051 23,390 28,068 35,085 42,102 46,780 70,170 84,204 105,255 140,340 210,510 and 421,020, with no remainder.
Since 421,020 cannot be divided by just 1 and 421,020, it is not a prime number.