Fatto matematico: 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 a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: July 21st is the day in 1914 that the Crown council of Romania decides the country shall remain neutral in World War I.