Properties of the Number -121485

One Hundred Twenty-One Thousand Four Hundred Eighty-Five

Basics

Value: -121486 → -121485 → -121484

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 7 × 13 × 89

Divisors: 1, 3, 5, 7, 13, 15, 21, 35, 39, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

Today's Target

7989 Try Today's Challenge

Representations

Binary: -11101101010001101

Octal: -355215

Duodecimal: -5A379

Hexadecimal: -1da8d

Square: 14758605225

Square Root: 348.54698392038915

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

a(n) = 1² + 3² + 5² + 7² + ... + (2·n-1)² = n*(4·n² - 1)/3. A447

Number of nodes in regular n-gon with all diagonals drawn. A7569

a(n) = n*(n-1)*(n-2)*(n-3)*(n²-3·n-2)/48. A93566

Odd tetrahedral numbers: a(n) = (4·n+1)*(4·n+2)*(4·n+3)/6. A15219

Squarefree tetrahedral numbers. A70755

Odd numbers k that are closer to being perfect than previous terms and also satisfy the condition that A324644(k)/A324198(k) = 2. A386422

Binomial coefficients C(91,n). A17807

a(n) = binomial(3·n + 1,3). A228887

Binomial coefficients C(n,88). A17752

Number of (3,n)-partitions of a chain of length n². A55658