Who was the President of the United States in 1842?

James Monroe was the President of the United States in 1822.

James Monroe (born April 28, 1758 in Westmoreland County, Virginia; died July 4, 1831 in New York, New York) succeeded James Madison as the fifth President of the United States, serving between March 4, 1817 and March 4, 1825, including the whole of the year 1822.