Properties of the Number 42748

Forty-Two Thousand Seven Hundred Forty-Eight

Basics

Value: 42747 → 42748 → 42749

Parity: even

Prime: No

Previous Prime: 42743

Next Prime: 42751

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 10687

Divisors: 1, 2, 4, 10687, 21374, 42748

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010011011111100

Octal: 123374

Duodecimal: 208A4

Hexadecimal: a6fc

Square: 1827391504

Square Root: 206.7558947164506

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

Constant term of the reduction by x²->x+3 of the polynomial p(n,x)=1+xⁿ+x²ⁿ. A192468

Number of nX2 0..2 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order. A222567

T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order. A222573

T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order. A222587

Numerators of continued fraction convergents to sqrt(905). A42748

The hyper-Wiener index of the nanostar dendrimer D_n. A227493