Fatto generale: 42184 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 42184 is an uninteresting number.
Trivia: 42184 is an unremarkable number.
Data storica: June 30th is the day in 1971 that the crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve.