The number 2,040,000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 32 34 40 48 50 51 60 64 68 75 80 85 96 100 102 120 125 136 150 160 170 192 200 204 240 250 255 272 300 320 340 375 400 408 425 480 500 510 544 600 625 680 750 800 816 850 960 1,000 1,020 1,088 1,200 1,250 1,275 1,360 1,500 1,600 1,632 1,700 1,875 2,000 2,040 2,125 2,400 2,500 2,550 2,720 3,000 3,264 3,400 3,750 4,000 4,080 4,250 4,800 5,000 5,100 5,440 6,000 6,375 6,800 7,500 8,000 8,160 8,500 10,000 10,200 10,625 12,000 12,750 13,600 15,000 16,320 17,000 20,000 20,400 21,250 24,000 25,500 27,200 30,000 31,875 34,000 40,000 40,800 42,500 51,000 60,000 63,750 68,000 81,600 85,000 102,000 120,000 127,500 136,000 170,000 204,000 255,000 340,000 408,000 510,000 680,000 1,020,000 and 2,040,000, with no remainder.
Since 2,040,000 cannot be divided by just 1 and 2,040,000, it is a composite number.