Q: Is 1,423,240 a Prime Number?
A: No, 1,423,240 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 1423240 can be evenly divided by 1 2 4 5 7 8 10 13 14 17 20 23 26 28 34 35 40 46 52 56 65 68 70 85 91 92 104 115 119 130 136 140 161 170 182 184 221 230 238 260 280 299 322 340 364 391 442 455 460 476 520 595 598 644 680 728 782 805 884 910 920 952 1,105 1,190 1,196 1,288 1,495 1,547 1,564 1,610 1,768 1,820 1,955 2,093 2,210 2,380 2,392 2,737 2,990 3,094 3,128 3,220 3,640 3,910 4,186 4,420 4,760 5,083 5,474 5,980 6,188 6,440 7,735 7,820 8,372 8,840 10,166 10,465 10,948 11,960 12,376 13,685 15,470 15,640 16,744 20,332 20,930 21,896 25,415 27,370 30,940 35,581 40,664 41,860 50,830 54,740 61,880 71,162 83,720 101,660 109,480 142,324 177,905 203,320 284,648 355,810 711,620 and 1,423,240, with no remainder.
Since 1,423,240 cannot be divided by just 1 and 1,423,240, it is not a prime number.