General fact: 48342 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 48342 is an unremarkable number.
Trivia: 48342 is an uninteresting number.
Historical date: May 9th is the day in 1904 that the steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100 mph (160 km/h).