Q: Is 1,243,512 a Prime Number?
A: No, 1,243,512 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 1243512 can be evenly divided by 1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 81 101 108 114 152 162 171 202 216 228 303 324 342 404 456 513 606 648 684 808 909 1,026 1,212 1,368 1,539 1,818 1,919 2,052 2,424 2,727 3,078 3,636 3,838 4,104 5,454 5,757 6,156 7,272 7,676 8,181 10,908 11,514 12,312 15,352 16,362 17,271 21,816 23,028 32,724 34,542 46,056 51,813 65,448 69,084 103,626 138,168 155,439 207,252 310,878 414,504 621,756 and 1,243,512, with no remainder.
Since 1,243,512 cannot be divided by just 1 and 1,243,512, it is not a prime number.