Properties of the Number 40120

Forty Thousand One Hundred Twenty

Basics

Value: 40119 → 40120 → 40121

Parity: even

Prime: No

Previous Prime: 40111

Next Prime: 40123

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 5 × 17 × 59

Divisors: 1, 2, 4, 5, 8, 10, 17, 20, 34, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110010111000

Octal: 116270

Duodecimal: 1B274

Hexadecimal: 9cb8

Square: 1609614400

Square Root: 200.29977533686852

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

Number of triangles in an n X n grid (or geoplane). A45996

Numbers n such that prime(n) == -7 (mod n). A92049

T(n,k)=Number of (n+5)X(k+5) 0..1 matrices with each 6X6 subblock idempotent. A224577

Square array read by antidiagonals downwards: T(n,k) = number of ways to arrange k indistinguishable points on an n X n square grid so that no three points are collinear at any angle. A194193

Triangle read by rows: T(n,k) (1 <= k <= n) = number of ways to choose three points from an n X k grid of points which are the vertices of a triangle of nonzero area. A334705

Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...). A203246

Number of (w,x,y,z) with all terms in {1,...,n} and w+x<y+z. A212523

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the lower median of every 2X2 subblock. A236254

Numbers k such that k divides prime(k) + prime(k+1). A66895

Numbers k such that φ(4k-1) = σ(k). A67235