Supriya Ghosh (Editor)

420 (number)

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420
  
421 →

Factorization
  
2× 3 × 5 × 7

Binary
  
1101001002

Cardinal
  
four hundred twenty

Roman numeral
  
CDXX

Ordinal
  
420th (four hundred and twentieth)

420 is the natural number following 419 and preceding 421.

Contents

In mathematics

420 is:

  • the sum of four consecutive primes (101 + 103 + 107 + 109).
  • a zero of the Mertens function and is sparsely totient.
  • a pronic number,
  • the smallest number divisible by the numbers 1 to 7, and as a consequence of that it is a Harshad number in every base from 2 to 10 except base 5.
  • a 141-gonal number.

    • In other fields

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

    • References

    420 (number) Wikipedia
    (Text) CC BY-SA