Properties of the Number 40642

Forty Thousand Six Hundred Forty-Two

Basics

Value: 40641 → 40642 → 40643

Parity: even

Prime: No

Previous Prime: 40639

Next Prime: 40693

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 7 × 2903

Divisors: 1, 2, 7, 14, 2903, 5806, 20321, 40642

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001111011000010

Octal: 117302

Duodecimal: 1B62A

Hexadecimal: 9ec2

Square: 1651772164

Square Root: 201.5986111063268

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

Indices where the cumulative sum of cos(2k+1)^2k+1 reaches a record high value. A389559

B-trees of order 5 with n labeled leaves. A58521

Numbers k such that 267·2^k + 1 is prime. A53350

a(n) = A086323(n)/n. A86442

Number of pairs (f,g) of commuting maps {0,..,n-1}->{0,..,n-1} with 0 <= f(k), g(k) <= k. A244524

Continued fraction for sqrt(668). A40642