Properties of the Number 1426

One Thousand Four Hundred Twenty-Six

Basics

Value: 1425 → 1426 → 1427

Parity: even

Prime: No

Previous Prime: 1423

Next Prime: 1427

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 23 × 31

Divisors: 1, 2, 23, 31, 46, 62, 713, 1426

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110010010

Octal: 2622

Duodecimal: 9AA

Hexadecimal: 592

Square: 2033476

Square Root: 37.76241517699841

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

Expansion of ∏_{m >= 1} (1 + x^m); number of partitions of n into distinct parts; number of partitions of n into odd parts. A9

Coordination sequence T1 for Zeolite Code ABW and ATN. A8000

Pentagonal numbers: a(n) = n*(3·n-1)/2. A326

a(n) = 4·n² - 9·n + 6. A54556

Expansion of g.f. (1 + x + 2·x²)/((1 - x)²*(1 - x³)). A969

a(n) = 2·a(n-1) - 2·a(n-3) + a(n-4) for n > 3, with initial terms 1, 1, 4, 8. A267682

Number of ways to partition 2n into distinct positive integers. A35294

Number of partitions of n into odd parts in which the largest part occurs only once. A117409

Indices n such that A019328(n) = φ(n,10) is prime, where φ is a cyclotomic polynomial. A138940

a(1) = a(2) = 1, a(3) = 4; thereafter a(n) = a(n-1) + a(n-3). A1609