A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3542000 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 20 22 23 25 28 35 40 44 46 50 55 56 70 77 80 88 92 100 110 112 115 125 140 154 161 175 176 184 200 220 230 250 253 275 280 308 322 350 368 385 400 440 460 500 506 550 560 575 616 644 700 770 805 875 880 920 1,000 1,012 1,100 1,150 1,232 1,265 1,288 1,375 1,400 1,540 1,610 1,750 1,771 1,840 1,925 2,000 2,024 2,200 2,300 2,530 2,576 2,750 2,800 2,875 3,080 3,220 3,500 3,542 3,850 4,025 4,048 4,400 4,600 5,060 5,500 5,750 6,160 6,325 6,440 7,000 7,084 7,700 8,050 8,855 9,200 9,625 10,120 11,000 11,500 12,650 12,880 14,000 14,168 15,400 16,100 17,710 19,250 20,125 20,240 22,000 23,000 25,300 28,336 30,800 31,625 32,200 35,420 38,500 40,250 44,275 46,000 50,600 63,250 64,400 70,840 77,000 80,500 88,550 101,200 126,500 141,680 154,000 161,000 177,100 221,375 253,000 322,000 354,200 442,750 506,000 708,400 885,500 1,771,000 and 3,542,000, with no remainder.
Since 3,542,000 cannot be divided by just 1 and 3,542,000, it is not a prime number.