Fatto generale: 2642 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2642 is 5^{2} + 6^{3} + 7^{4}.
Trivia: 2642 is an uninteresting number.
Data storica: March 26th is the day in 1999 that a jury in Michigan finds Dr. Jack Kevorkian guilty of second-degree murder for administering a lethal injection to a terminally ill man.