Properties of the Number 85421

Eighty-Five Thousand Four Hundred Twenty-One

Basics

Value: 85420 → 85421 → 85422

Parity: odd

Prime: No

Previous Prime: 85411

Next Prime: 85427

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 12203

Divisors: 1, 7, 12203, 85421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100110110101101

Octal: 246655

Duodecimal: 41525

Hexadecimal: 14dad

Square: 7296747241

Square Root: 292.26871197581175

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

Triangle read by rows: T(n,k) = number of unlabeled connected graphs on n nodes with degree >= 3 at each node (n >= 1, 0 <= k <= n(n-1)/2). A123545

Number of integer partitions of n whose LCM is 2·n. A327780

Number of strict integer partitions of n such that (length) * (maximum) = 2n. A361854

Number of strict integer partitions of n such that the maximum is twice the median. A361850

a(0)=2, a(1)=1, a(n+2)=floor[(e-1/e)*a(n+1)+a(n-2)]. A85421