142 (one hundred [and] forty-two) is the natural number following 141 and preceding 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 | |||
In mathematics
editThere 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]
In architecture
editThe Gateway Arch in St. Louis, Missouri was constructed with 142[4] prefabricated triangular sections.
In literature
editIn the Harry Potter Series of books, It is noted in 'The Philosopher's Stone' that There are 142 staircases in Hogwarts Castle (ch.8).
See also
editReferences
edit- ^ Sloane, N. J. A. (ed.). "Sequence A001865 (Number of connected functions on n labeled nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ 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.
- ^ Sloane, N. J. A. (ed.). "Sequence A005425". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Langmead, Donald; Garnaut, Christine (2001). Encyclopedia of Architectural and Engineering Feats. Santa Barbara, CA: ABC-CLIO. pp. 130–131. ISBN 978-1-57607-112-0.