A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4032210 can be evenly divided by 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 49 65 70 78 91 98 105 130 147 182 195 210 211 245 273 294 390 422 455 490 546 633 637 735 910 1,055 1,266 1,274 1,365 1,470 1,477 1,911 2,110 2,730 2,743 2,954 3,165 3,185 3,822 4,431 5,486 6,330 6,370 7,385 8,229 8,862 9,555 10,339 13,715 14,770 16,458 19,110 19,201 20,678 22,155 27,430 31,017 38,402 41,145 44,310 51,695 57,603 62,034 82,290 96,005 103,390 115,206 134,407 155,085 192,010 268,814 288,015 310,170 403,221 576,030 672,035 806,442 1,344,070 2,016,105 and 4,032,210, with no remainder.
Since 4,032,210 cannot be divided by just 1 and 4,032,210, it is not a prime number.