Properties of the Number 9420

Nine Thousand Four Hundred Twenty

Basics

Value: 9419 → 9420 → 9421

Parity: even

Prime: No

Previous Prime: 9419

Next Prime: 9421

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 157

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010011001100

Octal: 22314

Duodecimal: 5550

Hexadecimal: 24cc

Square: 88736400

Square Root: 97.05668446840743

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

Numbers k such that k² divides 13^k - 1. A128393

Positive integers n such that n¹¹ + 1 is semiprime. A105122

a(n) = 3·2*1 - 6·5*4 + 9·8*7 - 12·11·10 + 15·14·13 - 18·17·16 + ... - (up to the n-th term). A319886

a(1) = 932; for n > 1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1). A105213

Number of partitions p of n such that the multiplicity of (max(p) - min(p)) is a part. A240495

Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and have k peaks (i.e., ud and Ud's). A108425

Triangle, read by rows of 2·n+1 terms, where row n lists the coefficients in (1+3·x+2·x²)ⁿ. A200536

Number of tilings of a 5 X n rectangle using n pentominoes of shapes F, U, X, N. A247126

a(n) is the number of regions formed by n-secting the angles of a pentagon. A335553

Maximum number of different determinants that can be produced by permuting the elements of a 3 X 3 integer matrix with nonnegative entries <= n. A99834