First numbers that belong to both sets:
2,
4,
40,
42,
44,
2000,
2002,
2004,
2040,
2042,
2044,
4000,
4002,
4004,
4040,
4042,
4044,
40000,
40002,
40004,
40040,
40042,
40044,
42000,
42002,
42004,
42040,
42042,
42044,
44000,
44002,
44004,
44040,
44042,
44044.