Properties of the Number 40981

Forty Thousand Nine Hundred Eighty-One

Basics

Value: 40980 → 40981 → 40982

Parity: odd

Prime: No

Previous Prime: 40973

Next Prime: 40993

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 107 × 383

Divisors: 1, 107, 383, 40981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1010000000010101

Octal: 120025

Duodecimal: 1B871

Hexadecimal: a015

Square: 1679442361

Square Root: 202.43764472054104

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

T(n,k)=Number of (n+2)Xk 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative. A223652

Number of (n+2)X5 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative. A223649

Number of 5 X n 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative. A223655

Primes p such that x⁵ = 18 has no solution mod p. A40981