133 (number)

Source: Wikipedia, the free encyclopedia.
← 132 133 134 →
Cardinalone hundred thirty-three
Ordinal133rd
(one hundred thirty-third)
Factorization7 × 19
Divisors1, 7, 19, 133
Greek numeralΡΛΓ´
Roman numeralCXXXIII
Binary100001012
Ternary112213
Senary3416
Octal2058
DuodecimalB112
Hexadecimal8516

133 (one hundred [and] thirty-three) is the natural number following 132 and preceding 134.

In mathematics

133 is an n whose divisors (excluding n itself) added up divide φ(n). It is an octagonal number[1] and a happy number.[2]

133 is a Harshad number, because it is divisible by the sum of its digits.

133 is a

the number three
.

133 is a

Gaussian primes, this means that 133 is a Blum integer
.

133 is the number of compositions of 13 into distinct parts.[3]

In the military

In transportation

In other fields

133 is also:

See also

References

  1. ^ "Sloane's A000567 : Octagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-27.
  2. ^ "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-27.
  3. ^ Sloane, N. J. A. (ed.). "Sequence A032020 (Number of compositions (ordered partitions) of n into distinct parts)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2022-05-24.
  4. .