Properties of the Number -1206

Two Hundred Six

Basics

Value: -1207 → -1206 → -1205

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 67

Divisors: 1, 2, 3, 6, 9, 18, 67, 134, 201, 402

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10010110110

Octal: -2266

Duodecimal: -846

Hexadecimal: -4b6

Square: 1454436

Square Root: 34.72751070837067

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

G.f.: ∏_k>0 (1-x^2k-1)/(1-x^2k). A106507

a(n) = prime(n+3)*prime(n) - prime(n+1)*prime(n+2). A117301

Expansion of r(q)² / r(q²) in powers of q where r() is the Rogers-Ramanujan continued fraction. A285349

E.g.f. A(x) is defined by: A(x) = Integral B(x)*C(x)² - B(x)²*C(x) dx, where B(x) and C(x) are described by A278747 and A278748, respectively. A278746

Expansion of φ(x)² * χ(x²)⁴ * f(-x)² in powers of·where φ(), χ(), f() are Ramanujan θ functions. A280339

Expansion of the unique formal power series R(t) with constant term 0 satisfying t = ∑_n>=0 (1/(n+1))*binomial(2n,n)*binomial(3n,n)/*R(t)ⁿ⁺¹. A324313

n times the coefficient of xⁿ in log[1 + sum(k>=0, x²^k)]. A92462

G.f.: ∏_k>=1 (1 + x^{2·k - 1}) / (1 - x^2·k). A6950

Coefficients for expansion of (g(x)d/dx)ⁿ g(x); refined Eulerian numbers for calculating compositional inverse of h(x) = (d/dx)^-1 1/g(x); iterated derivatives as infinitesimal generators of flows. A145271

Numbers whose negated unsorted prime signature is not unimodal. A332642