Properties of the Number 85120

Eighty-Five Thousand One Hundred Twenty

Basics

Value: 85119 → 85120 → 85121

Parity: even

Prime: No

Previous Prime: 85109

Next Prime: 85121

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁷ × 5 × 7 × 19

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100110010000000

Octal: 246200

Duodecimal: 41314

Hexadecimal: 14c80

Square: 7245414400

Square Root: 291.75332046096753

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = ψ(n) - n and ψ(n) = A001615(n) is the Dedekind ψ function. A323329

Triangle by rows T(n,k), showing the number of meanders with length (n+1)*6 and containing (k+1)*6 Ls and (n-k)*6 Rs, where Ls and Rs denote arcs of equal length and a central angle of 60 degrees which are positively or negatively oriented. A197655

Numbers with prime factorization pqrs⁷. A190473

Expansion of e.g.f. ∑_k>=1 log(1/(1 - x^k/k)). A308345

a(n) = n*(n + 1)*(n + 2)*(7·n - 5)/12. A264850

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 454", based on the 5-celled von Neumann neighborhood. A288395

Expansion of e.g.f. exp(2·x)/(1-x)³. A82031

a(n) = (4·n³ + 11·n² + 9·n + 2)/2. A135712

a(n) = binomial(n+2,3)*4³. A141478

Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<3z. A212512