Q: Is 642,824 a Prime Number?
A: No, 642,824 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 642824 can be evenly divided by 1 2 4 7 8 13 14 26 28 52 56 91 104 182 364 728 883 1,766 3,532 6,181 7,064 11,479 12,362 22,958 24,724 45,916 49,448 80,353 91,832 160,706 321,412 and 642,824, with no remainder.
Since 642,824 cannot be divided by just 1 and 642,824, it is not a prime number.