112 (number)

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← 111 112 113 →
Cardinal one hundred twelve
Ordinal 112th
(one hundred twelfth)
Factorization 24× 7
Divisors 1, 2, 4, 7, 8, 14, 16, 28, 56, 112
Greek numeral ΡΙΒ´
Roman numeral CXII
Binary 11100002
Ternary 110113
Quaternary 13004
Quinary 4225
Senary 3046
Octal 1608
Duodecimal 9412
Hexadecimal 7016
Vigesimal 5C20
Base 36 3436

112 (one hundred [and] twelve) is the natural number following 111 and preceding 113.

In mathematics[edit]

112 is an abundant number, a heptagonal number,[1] and a Harshad number.[2] It is also the sum of six consecutive primes ().

In science[edit]

In telephony[edit]

112 is an emergency telephone number:

  • throughout the European Union – in some cases, alongside other, country-specific emergency numbers.
  • in various other countries.
  • on mobile phones implementing the GSM standard, where it redirects to the country-specific emergency number.

In other fields[edit]

One hundred [and] twelve is also:

  • 112 is the number of pounds in a British long hundredweight.[3]
  • The section of the Thai criminal code dealing with lèse majesté, often used as a shorthand for matters concerning opposition to the Thai monarchy.
  • The number of surat al-Ikhlas in the Qur'an

See also[edit]

References[edit]

  1. ^ "Sloane's A000566 : Heptagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
  2. ^ "Sloane's A005349 : Niven (or Harshad) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-26. 
  3. ^ Paul Pasles, Benjamin Franklin's numbers: an unsung mathematical odyssey. Princeton: Princeton University Press (2008): 37