Properties of the Number -101025

One Hundred One Thousand Twenty-Five

Basics

Value: -101026 → -101025 → -101024

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ² × 449

Divisors: 1, 3, 5, 9, 15, 25, 45, 75, 225, 449

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11000101010100001

Octal: -305241

Duodecimal: -4A569

Hexadecimal: -18aa1

Square: 10206050625

Square Root: 317.8443015062564

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) = n²*(2·n² - 1); also ∑_k=0..n-1 (2k+1)³. A2593

Transform of n³ by the Riordan array (1/(1-x²), x). A105636

Triangular numbers that are the product of a square number and a prime number. A253653

Numbers that have exactly 7 representations as a k-gonal number, P(m,k) = m*((k-2)*m - (k-4))/2, k and m >= 3. A321157

a(n) = n²*(2·n² + (-1)ⁿ). A275496

a(1) = 1; a(n) is the smallest triangular number > a(n-1) which differs from it at every digit. A68855

Numbers k for which gcd(k, A003961(k)) = gcd(σ(k), A003961(k)) > 1, and that satisfy Euler's condition for odd perfect numbers (A228058). A387166

Triangular numbers for which the sum of the digits is a square. A117404

Triangular arithmetic on half-squares: b(n)*(b(n) - 1)/2 where b(n) = floor(n²/2). A227970

Triangular numbers whose sum of digits is 9. A375824