Properties of the Number 426

Four Hundred Twenty-Six

Basics

Value: 425 → 426 → 427

Parity: even

Prime: No

Previous Prime: 421

Next Prime: 431

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 71

Divisors: 1, 2, 3, 6, 71, 142, 213, 426

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101010

Octal: 652

Duodecimal: 2B6

Hexadecimal: 1aa

Square: 181476

Square Root: 20.639767440550294

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

Sphenic numbers: products of 3 distinct primes. A7304

Number of compositions of n whose run-lengths are all different. A329739

Indices k such that (1/3)*(prime(k)+prime(k+1)+prime(k+2)) is a prime. A64113

Infinite sequence starting with a(0)=0 such that A049820(a(k)) = a(k-1) for all k>=1, where A049820(n) = n - (number of divisors of n). A259934

Primitive abundant numbers: abundant numbers (A005101) having no abundant proper divisor. A91191

Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function (A001065). A5114

Number of partitions of n with nonnegative rank. A64174

Shift factorial base representation of n one digit left (with 0 added to right), increment all nonzero digits by one, then convert back to decimal; Numbers with no digit 1 in their factorial base representation. A255411

Admirable numbers. A number n is admirable if there exists a proper divisor d' of n such that σ(n)-2d'=2n, where σ(n) is the sum of all divisors of n. A111592

Numbers k such that k⁸ + 1 is prime. A6314