42 lightyears equals 397,350,679,848,393,574,302,351,360 nanometers.
Convert 42 lightyears into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, inches, feet, yards, miles, hands, astronomical units, parsecs, etc...
Convert 3.9735067984839E+26 nanometers into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, inches, feet, yards, miles, hands, astronomical units, parsecs, etc...