105 742
105 742 is a composite number, even.
Propriétés
- Parité
- Pair
- Nombre de chiffres
- 6
- Somme des chiffres
- 19
- Racine numérique
- 1
- Palindrome
- Non
- Inversé
- 247 501
- Suite de Recamán
- a(42 895) = 105 742
- Nombre de diviseurs
- 24
- σ(n) — somme des diviseurs
- 201 096
Primalité
Prime factorization: 2 × 7 2 × 13 × 83
Diviseurs et multiples
Représentations
- En lettres
- one hundred five thousand seven hundred forty-two
- Ordinal
- 105742nd
- Binaire
- 11001110100001110
- Octal
- 316416
- Hexadécimal
- 0x19D0E
- Base64
- AZ0O
Aussi vu comme
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 105742, here are decompositions:
- 41 + 105701 = 105742
- 59 + 105683 = 105742
- 89 + 105653 = 105742
- 179 + 105563 = 105742
- 233 + 105509 = 105742
- 239 + 105503 = 105742
- 251 + 105491 = 105742
- 293 + 105449 = 105742
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.157.14.
- Address
- 0.1.157.14
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.157.14
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 105 742 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.