Properties of the Number 41666

Forty-One Thousand Six Hundred Sixty-Six

Basics

Value: 41665 → 41666 → 41667

Parity: even

Prime: No

Previous Prime: 41659

Next Prime: 41669

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 83 × 251

Divisors: 1, 2, 83, 166, 251, 502, 20833, 41666

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010001011000010

Octal: 121302

Duodecimal: 20142

Hexadecimal: a2c2

Square: 1736055556

Square Root: 204.12251223223763

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

a(n) = floor(10⁶/n). A33426

Numbers k such that φ(k) | sigma₁₀(k). A15768

Nonnegative numbers k such that 3·k + 2 is a cube. A287335

G.f. satisfies A(x) = 1 + x·A(x) + x²*A(x)⁷. A364476

If a Fibonacci sequence is formed with first term = number of digits in n and second term = sum of decimal digits in n, then n itself occurs as a term in the sequence after the first two terms. A38868

a(n) = ∑_k=1..n sigma₃(k) * floor(n/k). A356043

Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and exactly one more element moved upwards than downwards. A263759

The positive integers arranged in nonincreasing order of centrality (the fraction of n represented by the average gcd of n and the other positive integers). A80997

a(n) is n's rank among the positive integers in terms of centrality: the fraction of n represented by the average gcd of n and the positive integers, or A018804(n)/n² (cf. A080997). A80998

Numerators of continued fraction convergents to sqrt(352). A41666