Fatto generale: 135 is the cartridge version of 35mm photographic film, used widely in still photogaphy.
Fatto matematico: 135 is this number in base 10 can be expressed in operations using its own digits in at least two different ways.
Trivia: 135 is the angle between two planets in degrees so that they are in an astrological aspect called a sesquiquadrate.
Data storica: May 14th is the day in 1889 that the children's charity National Society for the Prevention of Cruelty to Children is launched in London.