Q: Is 420,072 a Prime Number?
A: No, 420,072 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 420072 can be evenly divided by 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 761 1,522 2,283 3,044 4,566 6,088 9,132 17,503 18,264 35,006 52,509 70,012 105,018 140,024 210,036 and 420,072, with no remainder.
Since 420,072 cannot be divided by just 1 and 420,072, it is not a prime number.