Q: Is 142,820 a Prime Number?
A: No, 142,820 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 142820 can be evenly divided by 1 2 4 5 10 20 37 74 148 185 193 370 386 740 772 965 1,930 3,860 7,141 14,282 28,564 35,705 71,410 and 142,820, with no remainder.
Since 142,820 cannot be divided by just 1 and 142,820, it is not a prime number.