Properties of the Number 11421

Eleven Thousand Four Hundred Twenty-One

Basics

Value: 11420 → 11421 → 11422

Parity: odd

Prime: No

Previous Prime: 11411

Next Prime: 11423

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 47

Divisors: 1, 3, 9, 27, 47, 81, 141, 243, 423, 1269

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10110010011101

Octal: 26235

Duodecimal: 6739

Hexadecimal: 2c9d

Square: 130439241

Square Root: 106.86907878334125

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 nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order. A222616

a(n) = prime(n)² - n. A182174

a(n) = ∑_i=0..n digsum₆(i)³, where digsum₆(i) = A053827(i). A231674

a(n) = ∑_i=0..n digsum(i)³, where digsum(i) = A007953(i). A231688

G.f.: A(x,y) = (1-y) * ∑_n>=0 yⁿ * (1 + x*(1-y)²)^n². A303920

Expansion of 1/(1-3x-3x³). A89978

Odd numbers divisible by exactly 6 primes (counted with multiplicity). A46319

Numbers with digital product = 8. A199989

Number of (w,x,y,z) with all terms in {1,...,n} and w+y=|x-y|+|y-z|. A212677

Number of odd terms in fⁿ, where f = 1/x²+1/x+1+x+x²+1/y²+1/y+y+y². A246314