Properties of the Number 40426

Forty Thousand Four Hundred Twenty-Six

Basics

Value: 40425 → 40426 → 40427

Parity: even

Prime: No

Previous Prime: 40423

Next Prime: 40427

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 17 × 29 × 41

Divisors: 1, 2, 17, 29, 34, 41, 58, 82, 493, 697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110111101010

Octal: 116752

Duodecimal: 1B48A

Hexadecimal: 9dea

Square: 1634261476

Square Root: 201.06217943710845

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

Diagonal in array of n-gonal numbers A081422. A81437

Expansion of 1/( (1-x)*(1-34·x+x²) ). A29546

A convolution triangle of numbers based on A001906 (even-indexed Fibonacci numbers). A125662

G.f. A(x) satisfies: 2·x = ∑_n=-oo..+oo (-1)ⁿ * x^n*(n+1/2) * A(x)ⁿ. A355352

Triangle of coefficients of Chebyshev's S(n,x-3) polynomials (exponents of·in increasing order). A207815

Triangle read by rows: T(0,0)=1; T(n,k) is the coefficient of x^k in the polynomial (-1)ⁿ*p(n,x), where p(n,x) is the characteristic polynomial of the n X n tridiagonal matrix with 3's on the main diagonal and -1's on the super- and subdiagonal (n >= 1; 0 <= k <= n). A123965

Number of pairs with two different elements which can be obtained by selecting unique elements from two sets with n+1 and n² elements respectively and n common elements. A85490

Triangle T(n, k, m) = t(n, m)/(t(k, m)*t(n-k, m)), where t(n, k) = ∏_j=1..n p(j, k+1), p(n, x) = ∑_j=0..n (-1)^j*A053122(n, j)*x^j, and m = 7, read by rows. A156601

Values of y in x² - 289 = 2·y². A106528

v(n+1)/v(n), where v=A203585. A203586