Properties of the Number 7120

Seven Thousand One Hundred Twenty

Basics

Value: 7119 → 7120 → 7121

Parity: even

Prime: No

Previous Prime: 7109

Next Prime: 7121

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 89

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101111010000

Octal: 15720

Duodecimal: 4154

Hexadecimal: 1bd0

Square: 50694400

Square Root: 84.38009243891595

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

Triangle of Euler-Bernoulli or Entringer numbers read by rows: T(n,k) is the number of down-up permutations of n+1 starting with k+1. A8282

a(n) = solution to the postage stamp problem with 3 denominations and n stamps. A1208

Triangle of Euler-Bernoulli or Entringer numbers read by rows. A8281

Boustrophedon version of triangle of Euler-Bernoulli or Entringer numbers read by rows. A8280

Poincaré series for invariant polynomial functions on the space of binary forms of degree 14. A293939

Numbers k such that φ(x) = k has exactly 11 solutions. A60674

Concatenation of n-th prime and n in decimal notation. A75110

Triangle of Euler-Bernoulli or Entringer numbers. A10094

a(n+2) = 9·a(n+1) - a(n) + 1, with a(1)=1, a(2)=10. A92420

T(n,k) = Number of length n+1 nonnegative integer arrays starting and ending with 0 with adjacent elements differing by no more than k. A204213