Q: Is 4,721,840 a Prime Number?
A: No, 4,721,840 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 4721840 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 59,023 118,046 236,092 295,115 472,184 590,230 944,368 1,180,460 2,360,920 and 4,721,840, with no remainder.
Since 4,721,840 cannot be divided by just 1 and 4,721,840, it is not a prime number.