Q: Is 4,042,215 a Prime Number?
A: No, 4,042,215 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 4042215 can be evenly divided by 1 3 5 9 15 43 45 129 215 387 645 1,935 2,089 6,267 10,445 18,801 31,335 89,827 94,005 269,481 449,135 808,443 1,347,405 and 4,042,215, with no remainder.
Since 4,042,215 cannot be divided by just 1 and 4,042,215, it is not a prime number.