Properties of the Number -423801

Four Hundred Twenty-Three Thousand Eight Hundred One

Basics

Value: -423802 → -423801 → -423800

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 ² × 31 ²

Divisors: 1, 3, 7, 9, 21, 31, 49, 63, 93, 147

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100111011101111001

Octal: -1473571

Duodecimal: -185309

Hexadecimal: -67779

Square: 179607287601

Square Root: 651

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

Squares which are palindromes in base 5. A29989

a(n) = n⁴ - 2·n³ + 3·n² - 2·n + 1, the Alexander polynomial for reef and granny knots. A58031

a(n) = sigma₂(n)². A356533

Squares of pentagonal numbers: a(n) = (1/4)*n²*(3·n-1)². A100255

Odd squares k, multiples of 3 and non-multiples of 5, such that σ(k)/k >= 5/3. A388016

Squares containing 2k digits in which the sum of the first k digits = that of the rest. A68897

Number of subsets of {1,2,...,n-12} without differences equal to 2, 4, 6, 8, 10 or 12. A224813

Odd squares which are the sum of the divisors of some n. A243810

a(n) = numerator of ∏_d∣n (σ(d)/τ(d)) where σ(k) = the sum of the divisors of k (A000203) and τ(k) = the number of divisors of k (A000005). A324509

Triangular array read by rows. T(n,k) is the number of Green's H-classes contained in the D-class of rank k matrices in the semigroup Mat_n(F₂) of n X n matrices over the field F₂. n>=0, 0<=k<=n. A359313