420 (number)

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For other uses, see 420 (disambiguation).
← 419 420 421 →
Cardinal four hundred twenty
Ordinal 420th
(four hundred and twentieth)
Factorization 22× 3 × 5 × 7
Roman numeral CDXX
Binary 1101001002
Ternary 1201203
Quaternary 122104
Quinary 31405
Senary 15406
Octal 6448
Duodecimal 2B012
Hexadecimal 1A416
Vigesimal 11020
Base 36 BO36

420 is the natural number following 419 and preceding 421.

In mathematics[edit]

420 is:

In other fields[edit]

  • 420 is a code-term that refers to the consumption of cannabis.

References[edit]

  1. ^ "Sloane's A028442 : Numbers n such that Mertens' function is zero". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02. 
  2. ^ "Sloane's A036913 : Sparsely totient numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02. 
  3. ^ "Sloane's A002378 : Oblong (or promic, pronic, or heteromecic) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-02.