Properties of the Number 40156

Forty Thousand One Hundred Fifty-Six

Basics

Value: 40155 → 40156 → 40157

Parity: even

Prime: No

Previous Prime: 40153

Next Prime: 40163

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 10039

Divisors: 1, 2, 4, 10039, 20078, 40156

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110011011100

Octal: 116334

Duodecimal: 1B2A4

Hexadecimal: 9cdc

Square: 1612504336

Square Root: 200.38962048968506

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

4th binomial transform of (1,0,1,0,1,...), A059841. A81186

a(n) = T(2n-1,n-1), T given by A026769. Also T(2n+1,n+1), T given by A026780. A26773

a(n) = T(n, floor(n/2)), T given by A026769. A26775

Expansion of (-1 + ∏_k>=1 1 / (1 + (-x)^k))³. A341241

Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to either SmallGroup(2187,247)-#1;5 or SmallGroup(2187,247)-#1;9. A250242

Numbers k such that prime(k) == 11 (mod k). A116657

Indices of records in A307730. A348449

Numbers z such that x² + y⁷ = z² (with positive integers·and y) and gcd(x, y, z) = 1. A293693

Numbers n such that n+1 divides prime(n)+1. A61437

Indices of primes in sequence defined by A(0) = 89, A(n) = 10·A(n-1) - 21 for n > 0. A101075