46 is the natural number following 45 and preceding 47.

Cardinal	forty-six
Ordinal	46th (forty-sixth)
Factorization
Roman numeral	XLVI
Binary	101110
Hexadecimal	2E

In mathematics

Forty-six is a Wedderburn-Etherington number, an enneagonal number and a centered triangular number.

In science

• The atomic number of palladium
• The number of human chromosomes

In astronomy,

Messier object M46, a magnitude 6.5 open cluster in the constellation Puppis

The New General Catalogue object NGC 46 , a star in the constellation Pisces

The Saros number of the solar eclipse series which began on -1371 April 1 and ended on -91 May 8. The duration of Saros series 46 was 1280.1 years, and it contained 72 solar eclipses.

The Saros number of the lunar eclipse series which began on -1358 July 19 and ended on 12 October 8. The duration of Saros series 46 was 1370.5 years, and it contained 77 lunar eclipses.

In other fields

Forty-six is also:

• The total of books in the Old Testament of the Holy Bible in the Catholic version if the Book of Lamentations is counted as a book separate from the Book of Jeremiah.
• In Psalm 46 in the King James Bible, the 46th word from the beginning is "shake" and the 46th word from the end is "spear", in reference to Shakespeare, who at the time the King James Bible came out was 46-years old.
• The code for international direct dial phone calls to Sweden.
• Carl Long's racecar number.
• Part of the title Forty-Six Lives, a translation by Henry Parker and Lord Morley of Boccaccio's play De claris mulieribus.
• The number of mountains in the 46 peaks of the Adirondak mountain range. People who have climbed all of them are called "forty-sixers"; there is also an unofficial 47th peak.
• The number of samurai, out of 47, who carried out the attack in the historical Ako vendetta; sometimes referred to as the 46 Ronins to discount the one samurai forced to turn back.
• In the title of the movie Code 46, starring Tim Robbins and Samantha Morton.
• The year AD 46, 46 BC, and 1946.