Properties of the Number 16642

Sixteen Thousand Six Hundred Forty-Two

Basics

Value: 16641 → 16642 → 16643

Parity: even

Prime: No

Previous Prime: 16633

Next Prime: 16649

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 53 × 157

Divisors: 1, 2, 53, 106, 157, 314, 8321, 16642

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000100000010

Octal: 40402

Duodecimal: 976A

Hexadecimal: 4102

Square: 276956164

Square Root: 129.00387591076478

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

Numbers that are the sum of 5 positive 7th powers. A3372

When expressed in base 3 and then interpreted in base 5, is a multiple of the original number. A62864

Numbers which converge to 2592 under repeated application of the powertrain map of A133500. A135384

Numbers n such that n is a substring of its square in base 8 (written in base 10). A18832

a(n) = 9·n² + 1. A247792

a(n) = ∑_{k=0..floor(n/3)} 2^k * Stirling2(n,3·k). A357782

Numbers n with property that for each single digit d of n, we can also see the decimal expansion of 2^d as a substring of n. Also n may not contain any zero digits. A135016

Triangular array: the fission of (p(n,x)) by (q(n,x)), where p(n,x)=sum{F(k+1)*x^n-k : 0<=k<=n}, where F=A000045 (Fibonacci numbers) and q(n,x)=(x+1)ⁿ. A193997

Mirror of the triangle A193997. A193998

Number of (w,x,y,z) with all terms in {1,...,n} and w < (geometric mean of x,y,z). A212141