Properties of the Number 80142

Eighty Thousand One Hundred Forty-Two

Basics

Value: 80141 → 80142 → 80143

Parity: even

Prime: No

Previous Prime: 80141

Next Prime: 80147

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 19 ² × 37

Divisors: 1, 2, 3, 6, 19, 37, 38, 57, 74, 111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100100001110

Octal: 234416

Duodecimal: 3A466

Hexadecimal: 1390e

Square: 6422740164

Square Root: 283.09362408927547

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

Partial sums of n 3-spaced triangular numbers beginning with t(3), e.g., a(2) = t(3)+t(6) = 6+21 = 27. A85788

∑_0<j<k<=n s(k)-s(j), where s(j)=A002620(j) is the j-th quarter-square. A206806

Number of (w,x,y,z) with all terms in {1,...,n} and w>=2x and y>3z. A212522

Row sums of A103441. Number of two-colored bracelets of n beads with different sets of distances among the white beads. A103442

Greedy frac multiples of 1/π: a(1)=1, ∑_n>0 frac(a(n)*x) = 1 at x=1/π, where "frac(y)" denotes the fractional part of y. A80142