Q: Is 4,021,749 a Prime Number?
A: No, 4,021,749 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 4021749 can be evenly divided by 1 3 9 19 29 57 87 171 261 551 811 1,653 2,433 4,959 7,299 15,409 23,519 46,227 70,557 138,681 211,671 446,861 1,340,583 and 4,021,749, with no remainder.
Since 4,021,749 cannot be divided by just 1 and 4,021,749, it is not a prime number.