A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2074140 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 23 27 30 36 45 46 54 60 69 90 92 108 115 135 138 167 180 207 230 270 276 334 345 414 460 501 540 621 668 690 828 835 1,002 1,035 1,242 1,380 1,503 1,670 2,004 2,070 2,484 2,505 3,006 3,105 3,340 3,841 4,140 4,509 5,010 6,012 6,210 7,515 7,682 9,018 10,020 11,523 12,420 15,030 15,364 18,036 19,205 22,545 23,046 30,060 34,569 38,410 45,090 46,092 57,615 69,138 76,820 90,180 103,707 115,230 138,276 172,845 207,414 230,460 345,690 414,828 518,535 691,380 1,037,070 and 2,074,140, with no remainder.
Since 2,074,140 cannot be divided by just 1 and 2,074,140, it is not a prime number.