Properties of the Number 42164

Forty-Two Thousand One Hundred Sixty-Four

Basics

Value: 42163 → 42164 → 42165

Parity: even

Prime: No

Previous Prime: 42157

Next Prime: 42169

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 83 × 127

Divisors: 1, 2, 4, 83, 127, 166, 254, 332, 508, 10541

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010110100

Octal: 122264

Duodecimal: 20498

Hexadecimal: a4b4

Square: 1777802896

Square Root: 205.33874451744367

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 permutations of length n sortable by 3 passes through a pop-stack. A293774

Constant term of the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192969

Position of 5ⁿ in A051037 (5-smooth numbers). A188427

The base 10 numbers with a digit product > 0 and which when written in bases 3,4,5,6,7,8,9 have two or more other base representations with the same digit product. A331565

Denominators of the convergents to the continued fraction of π²/6. A80017

Numbers n with property that for each single digit d of n, we can also see the decimal expansion of 2^d as a substring of n. Also n may not contain any zero digits. A135016

Sum of the nonnegative terms in the n-th row of A365968. A377170

Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero. A189500

Numbers k such that 8k+1, 12k+1 and 24k+1 are primes and the last two are also of the form x² + 27y², so the tetrahedral number T(24k+1) is a Fermat pseudoprime to base 2. A321867

Numerators of continued fraction convergents to sqrt(607). A42164