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 1545 that the first landing of French troops on the coast of the Isle of Wight during the French invasion of the Isle of Wight.