Properties of the Number 42246

Forty-Two Thousand Two Hundred Forty-Six

Basics

Value: 42245 → 42246 → 42247

Parity: even

Prime: No

Previous Prime: 42239

Next Prime: 42257

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 2347

Divisors: 1, 2, 3, 6, 9, 18, 2347, 4694, 7041, 14082

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010100000110

Octal: 122406

Duodecimal: 20546

Hexadecimal: a506

Square: 1784724516

Square Root: 205.53831759552767

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

O.g.f.: exp( ∑_n>=1 -(σ(2·n²) - σ(n²)) * (-x)ⁿ/n ). A215603

a(n) = (2·n³ - n² - n + 2)/2. A81441

Indices of primes in the sequence defined by A(0) = 47, A(n) = 10·A(n-1) - 33 for n > 0. A101724

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 833", based on the 5-celled von Neumann neighborhood. A273677

Number of ordinary double points of a family of threefolds. A294604

Table read by antidiagonals: T(n, k) is the sum of the numbers inside the k-th square of size n X n when the square spiral is tiled with these squares, where each tile contains numbers which sum to the minimum possible value, and each number on the spiral can only be in one tile. A341363

Numerators of continued fraction convergents to sqrt(649). A42246