Properties of the Number 42988

Forty-Two Thousand Nine Hundred Eighty-Eight

Basics

Value: 42987 → 42988 → 42989

Parity: even

Prime: No

Previous Prime: 42979

Next Prime: 42989

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 11 × 977

Divisors: 1, 2, 4, 11, 22, 44, 977, 1954, 3908, 10747

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010011111101100

Octal: 123754

Duodecimal: 20A64

Hexadecimal: a7ec

Square: 1847968144

Square Root: 207.33547694497437

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

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood. A278957

a(n) = 42·2ⁿ - 20. A305064

Primes not congruent to -1 (mod 7). A42988

Number of (n+1)X(5+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250465

Number of (n+1) X (4+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250894

Number of (n+2)X(1+2) 0..2 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order. A253611