Properties of the Number -1209641

Two Hundred Nine Thousand Six Hundred Forty-One

Basics

Value: -1209642 → -1209641 → -1209640

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 37 × 32693

Divisors: 1, 37, 32693, 1209641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100111010100101001

Octal: -4472451

Duodecimal: -4A4035

Hexadecimal: -127529

Square: 1463231348881

Square Root: 1099.8368060762468

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

Sum of pyramid weights of all dispersed Dyck paths of length n (i.e., of all Motzkin paths of length n with no (1,0) steps at positive heights). A191319

a(n) = ∑_k=0..n k·binomial(2·k,k)/2. A277178