142 (number)

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← 141 142 143 →
Cardinal one hundred forty-two
Ordinal 142nd
(one hundred forty-second)
Factorization 2 × 71
Divisors 1, 2, 71, 142
Greek numeral ΡΜΒ´
Roman numeral CXLII
Binary 100011102
Ternary 120213
Senary 3546
Octal 2168
Duodecimal BA12
Hexadecimal 8E16

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

Contents

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]

See also

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References

  1. ↑ Sloane, N. J. A. (ed.). "SequenceA001865(Number of connected functions on n labeled nodes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. ↑ Sloane, N. J. A. (ed.). "SequenceA005470(Number of unlabeled planar simple graphs with n nodes)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  3. ↑ Sloane, N. J. A. (ed.). "SequenceA005425". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
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