The number 1,122,000 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 16 17 20 22 24 25 30 33 34 40 44 48 50 51 55 60 66 68 75 80 85 88 100 102 110 120 125 132 136 150 165 170 176 187 200 204 220 240 250 255 264 272 275 300 330 340 374 375 400 408 425 440 500 510 528 550 561 600 660 680 748 750 816 825 850 880 935 1,000 1,020 1,100 1,122 1,200 1,275 1,320 1,360 1,375 1,496 1,500 1,650 1,700 1,870 2,000 2,040 2,125 2,200 2,244 2,550 2,640 2,750 2,805 2,992 3,000 3,300 3,400 3,740 4,080 4,125 4,250 4,400 4,488 4,675 5,100 5,500 5,610 6,000 6,375 6,600 6,800 7,480 8,250 8,500 8,976 9,350 10,200 11,000 11,220 12,750 13,200 14,025 14,960 16,500 17,000 18,700 20,400 22,000 22,440 23,375 25,500 28,050 33,000 34,000 37,400 44,880 46,750 51,000 56,100 66,000 70,125 74,800 93,500 102,000 112,200 140,250 187,000 224,400 280,500 374,000 561,000 and 1,122,000, with no remainder.
Since 1,122,000 cannot be divided by just 1 and 1,122,000, it is a composite number.