Q: Is 1,421,120 a Prime Number?
A: No, 1,421,120 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 1421120 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 4,441 8,882 17,764 22,205 35,528 44,410 71,056 88,820 142,112 177,640 284,224 355,280 710,560 and 1,421,120, with no remainder.
Since 1,421,120 cannot be divided by just 1 and 1,421,120, it is not a prime number.