Q: Is 865,242 a Prime Number?
A: No, 865,242 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 865242 can be evenly divided by 1 2 3 6 7 9 14 18 21 27 42 49 54 63 81 98 109 126 147 162 189 218 294 327 378 441 567 654 763 882 981 1,134 1,323 1,526 1,962 2,289 2,646 2,943 3,969 4,578 5,341 5,886 6,867 7,938 8,829 10,682 13,734 16,023 17,658 20,601 32,046 41,202 48,069 61,803 96,138 123,606 144,207 288,414 432,621 and 865,242, with no remainder.
Since 865,242 cannot be divided by just 1 and 865,242, it is not a prime number.