124 (number)

124 is the natural number following 123 and preceding 125.

← 123 124 125 →
← 120 121 122 123 124 125 126 127 128 129 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred [and] twenty-four
Ordinal	th
Numeral system	124
Factorization	$2^{2}\cdot 31$
Divisors	1, 2, 4, 31, 62, 124
Greek numeral	ΡΚΔ´
Roman numeral	CXXIIII
Binary	11111002
Ternary	111213
Senary	3246
Octal	1748
Duodecimal	A412
Hexadecimal	7C16

In mathematics

124 is the sum of eight consecutive primes (5 + 7 + 11 + 13 + 17 + 19 + 23 + 29). It is a nontotient since there is no integer with 124 coprimes below it, it is an untouchable number since there is no integer whose proper divisors add up to 124.

In base 5 it is a repdigit.

In other fields

124 is also:

• The atomic number of the yet-to-be-discovered element unbiquadium
• Tellurium-124 is a stable isotope of tellurium

See also

• 124th
• List of highways numbered 124
• United Nations Security Council Resolution 124
• Sonnet 124 by William Shakespeare