Definition: In this task you will be given a list of numbers. You should remove any number that is not an integer (whole number). If every number is not an whole number then an empty list ("[]") should be returned. Otherwise, answer with the list of whole numbers separated by comma inside brackets.
Input: [20.739, -1.82, 29, 23, -3.421, -29.422, 5.193, 7.863, -42]

[29, 23, -42]