Fatto generale: 126 is the atomic number of unbihexium, an element that has not yet been discovered.
Fatto matematico: 126 is a pentagonal pyramidal number, and a decagonal number as well as a pentatope number.
Trivia: 126 is the atomic number of unbihexium, an element that has not yet been discovered.
Data storica: May 5th is the day in 1941 that Emperor Haile Selassie returns to Addis Ababa, Ethiopia; the country commemorates the date as Liberation Day or Patriots' Victory Day.