Q: Is 142,780 a Prime Number?
A: No, 142,780 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 142780 can be evenly divided by 1 2 4 5 10 11 20 22 44 55 59 110 118 121 220 236 242 295 484 590 605 649 1,180 1,210 1,298 2,420 2,596 3,245 6,490 7,139 12,980 14,278 28,556 35,695 71,390 and 142,780, with no remainder.
Since 142,780 cannot be divided by just 1 and 142,780, it is not a prime number.