112 (number)

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

← 111 113 → 112
← 110 111 112 113 114 115 116 117 118 119 → List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	one hundred [and] twelve
Ordinal	112th (one hundred [and] twelfth)
Numeral system	112
Factorization	$2^4 \cdot 7$
Divisors	1, 2, 4, 7, 8, 14, 16, 28, 56, 112
Roman numeral	CXII
Binary	11100002
Octal	1608
Duodecimal	9412
Hexadecimal	7016

In mathematics

One hundred [and] twelve is an abundant number and a heptagonal number. It is also the sum of six consecutive primes (11 + 13 + 17 + 19 + 23 + 29).

112 is in base 10 both a Harshad number.

In science

• The atomic number of the element copernicium (formerly called ununbium).

In telephony

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

One hundred [and] twelve is also:

• 112 is the number of pounds in a British long hundredweight.^[1]
• The number of surat al-Ikhlas in the Qur'an

See also

• List of highways numbered 112
• Persons living to the age of 112

References

1. ^ Paul Pasles, Benjamin Franklin's numbers: an unsung mathematical odyssey. Princeton: Princeton University Press (2008): 37

• Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 134