Mathematical fact: 2842 is the smallest number with the property that its first 4 multiples contain the digit 8.
Trivia: 2842 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Historical date: October 12th is the day in 1793 that the cornerstone of Old East, the oldest state university building in the United States, is laid on the campus of the University of North Carolina.