Properties of the Number 79421

Seventy-Nine Thousand Four Hundred Twenty-One

Basics

Value: 79420 → 79421 → 79422

Parity: odd

Prime: No

Previous Prime: 79411

Next Prime: 79423

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 43 × 1847

Divisors: 1, 43, 1847, 79421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011000111101

Octal: 233075

Duodecimal: 39B65

Hexadecimal: 1363d

Square: 6307695241

Square Root: 281.8173167142147

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

Becomes prime after n iterations of f(x) = φ(x)+1 (least inverse of A039651). A39652

a(n) = n³ - 2·n. A242135

n for which A079277(n) + φ(n) < n. A208815

Semiprimes of the form n³ - 2·n. A240436

Composite numbers k such that the sum of their aliquot parts divides k+1. A306532

Non-prime-powers k at which the variance of the first differences of the logarithms of the divisors of k, scaled by log(k), reaches a new minimum. A323729

Numbers of the form hⁱ + k^j where h,i,j,k are distinct positive integers and max{h,i,j,k} - min{h,i,j,k} = 3. A391670

Spiro-Fibonacci differences, a(n) = difference of two previous terms that are nearest when terms arranged in a spiral. A79421