142 (number)

← 141 142 143 →
Cardinalone hundred forty-two
Ordinal142nd
(one hundred forty-second)
Factorization2 × 71
Divisors1, 2, 71, 142
Greek numeralΡΜΒ´
Roman numeralCXLII, cxlii
Binary100011102
Ternary120213
Senary3546
Octal2168
DuodecimalBA12
Hexadecimal8E16

142 (one hundred [and] forty-two) is the natural number following 141 and preceding 143.

In mathematics

There are 142 connected functional graphs on four labeled vertices,[1] 142 planar graphs with 6 unlabeled vertices,[2] and 142 partial involutions on five elements.[3] It is also palindromic in base 3 (12021).

In memoriam

At the United States Merchant Marine Academy, the number '142' represents 142 Cadet/Midshipmen who died aboard merchant vessels during World War II. The U.S. Merchant Marine Academy, among the nation's five federal academies, is the only institution authorized to carry a battle standard as part of its color guard. The battle standard bears the number "142" on a field of red, white and blue.

References

  1. ^ Sloane, N. J. A. (ed.). "Sequence A001865 (Number of connected functions on n labeled nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A005470 (Number of unlabeled planar simple graphs with n nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ Sloane, N. J. A. (ed.). "Sequence A005425". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.


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