Fatto generale: 4020 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4020 is a boring number.
Trivia: 4020 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: January 2nd is the day in 1935 that Bruno Hauptmann goes on trial for the murder of Charles Lindbergh, Jr., infant son of aviator Charles Lindbergh.