Properties of the Number -1220409

Two Hundred Twenty Thousand Four Hundred Nine

Basics

Value: -1220410 → -1220409 → -1220408

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 135601

Divisors: 1, 3, 9, 135601, 406803, 1220409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101001111100111001

Octal: -4517471

Duodecimal: -4AA309

Hexadecimal: -129f39

Square: 1489398127281

Square Root: 1104.7212318046577

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)=Half the number of (n+1)X(n+1) symmetric 0..k arrays with no 2X2 subblock summing to 2k. A213697

Half the number of (n+1)X(n+1) symmetric 0..1 arrays with no 2X2 subblock summing to 2. A213690

Half the number of 8X8 0..n symmetric arrays with no 2X2 subblock summing to 2n. A213703