Properties of the Number 42422

Forty-Two Thousand Four Hundred Twenty-Two

Basics

Value: 42421 → 42422 → 42423

Parity: even

Prime: No

Previous Prime: 42409

Next Prime: 42433

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 21211

Divisors: 1, 2, 21211, 42422

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010110110110

Octal: 122666

Duodecimal: 20672

Hexadecimal: a5b6

Square: 1799626084

Square Root: 205.966016614392

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

T(n,k)=Number of (n+1)X(k+1) 0..3 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. A250676

All 81 combinations of prefixing and following a(n) by a single digit are nonprime. A32734

Numbers k such that 2^k + 3^k is a semiprime. A50244

Composite numbers k such that all the decimal concatenations ik and ikj (i, j = 1...9) are also composite. A32737

Numbers k such that (2^k + 3^k)/13 is prime. A181628

Semiprimes sp such that sp plus its digit sum is a perfect square. A244733

Number of (n+1)X(3+1) 0..3 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. A250671

Number of (2+1)X(n+1) 0..3 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. A250678

Numbers k such that 363·2^k+1 is prime. A323006

Numbers whose prime factorization (prime factors and exponents) contains the digits 1 and 2 at least once, but no other digits. A364484