Q: Is 2,146,720 a Prime Number?
A: No, 2,146,720 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 2146720 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 13,417 26,834 53,668 67,085 107,336 134,170 214,672 268,340 429,344 536,680 1,073,360 and 2,146,720, with no remainder.
Since 2,146,720 cannot be divided by just 1 and 2,146,720, it is not a prime number.