Hecho general: 7142 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 7142 is the smallest number that can not be written as the sum of 2 volumes of rectangular boxes with integer dimensions less than 20.
Trivia: 7142 is an unremarkable number.
Fecha histórica: July 21st is the day in 365 that a tsunami devastates the city of Alexandria, Egypt.