Properties of the Number 41000

Forty-One Thousand

Basics

Value: 40999 → 41000 → 41001

Parity: even

Prime: No

Previous Prime: 40993

Next Prime: 41011

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 ³ × 41

Divisors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 41

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010000000101000

Octal: 120050

Duodecimal: 1B888

Hexadecimal: a028

Square: 1681000000

Square Root: 202.48456731316588

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

Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 9 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=4·floor(n/2), read by rows. A238581

Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171), with the last leaf implicit, i.e., these words are given without the last trailing zero, except for the null tree which is encoded as 0. A71153

Number of rooted triangular cacti with 2n+1 nodes (n triangles). A3080

Each permutation in the list A060117 converted to Site Swap notation, with digits reversed. "Zero throws" (fixed elements) indicated with 0's. A60496

Row sums of irregular triangle A070168. A285098

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 777", based on the 5-celled von Neumann neighborhood. A283917

Least number k such that the determinant of the circulant matrix formed by its decimal digits is equal to k/n. A323485

Number of triangular regions in a "frame" of size n X n (see Comments in A331776 for definition), divided by 4. A332595

a(n) = (9·n+2)*(9·n+7). A177072

Łukasiewicz words (without the last zero) for rooted plane trees where non-leaf branching can occur only at the leftmost branch of any level, but nowhere else. A209644