Q: Is 2,421,872 a Prime Number?
A: No, 2,421,872 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 2421872 can be evenly divided by 1 2 4 8 16 37 74 148 296 592 4,091 8,182 16,364 32,728 65,456 151,367 302,734 605,468 1,210,936 and 2,421,872, with no remainder.
Since 2,421,872 cannot be divided by just 1 and 2,421,872, it is not a prime number.