Properties of the Number 4321

Four Thousand Three Hundred Twenty-One

Basics

Value: 4320 → 4321 → 4322

Parity: odd

Prime: No

Previous Prime: 4297

Next Prime: 4327

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 29 × 149

Divisors: 1, 29, 149, 4321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1000011100001

Octal: 10341

Duodecimal: 2601

Hexadecimal: 10e1

Square: 18671041

Square Root: 65.73431371817918

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 of compositions of the integer n into positive parts that avoid a fixed pattern of three letters. A102726

Concatenation of numbers from n down to 1. A422

Decimal representation of permutations of lengths 1, 2, 3, ... arranged lexicographically. A30299

Pinwheel numbers: a(n) = 2·n² + 6·n + 1. A59993

Concatenation of digits of natural numbers from n down to 1. A104759

a(n) = concatenation of reversed digits of natural numbers from n down to 1. A138793

T(n,k)=Number of strings of numbers x(i=1..n) in 0..k with sum i·x(i)² equal to n·k². A184441

Number of days after Jan 01 1000 such that the date written in the ISO-8601-format YYYYMMDD is palindromic. A210883

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250812

a(n) = 1 + 2·n + 3·n² + 4·n³. A56578