Fatto generale: 21430 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 21430 is an unremarkable number.
Trivia: 21430 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: September 2nd is the day in 1901 that Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.