Hecho general: 4290 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 4290 is a value of n for which _{2n}C_{n} is divisible by n^{2}.
Trivia: 4290 is an uninteresting number.
Fecha histórica: September 29th is the day in 522 BC that Darius I of Persia kills the Magian usurper Gaumâta, securing his hold as king of the Persian Empire.