Fait mathématique: 4195 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 4195 is an uninteresting number.
Date historique: June 26th is the day in 1974 that the Universal Product Code is scanned for the first time to sell a package of Wrigley's chewing gum at the Marsh Supermarket in Troy, Ohio.