Properties of the Number 42724

Forty-Two Thousand Seven Hundred Twenty-Four

Basics

Value: 42723 → 42724 → 42725

Parity: even

Prime: No

Previous Prime: 42719

Next Prime: 42727

Digit Sum: 19

Digital Root: 1

Palindrome: Yes

Factorization: 2 ² × 11 × 971

Divisors: 1, 2, 4, 11, 22, 44, 971, 1942, 3884, 10681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011011100100

Octal: 123344

Duodecimal: 20884

Hexadecimal: a6e4

Square: 1825340176

Square Root: 206.6978471102203

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

Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829. A83830

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock. A236035

Numerators of continued fraction convergents to sqrt(24). A41038

Numerators of continued fraction convergents to sqrt(216). A41402

Palindromes which are sums of two consecutive primes. A162571

Coordination sequence for 4-dimensional I-centered cubic orthogonal lattice. A8532

Number of (n+1)X(1+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock. A236028

Number of (n+1)X(5+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock. A236032

Number of positive integers <= 2ⁿ of form x² + 7 y². A54151

G.f. satisfies: A(x) = 1 + x/A(-x·A(x)⁸)⁴. A213101