Properties of the Number -126217

One Hundred Twenty-Six Thousand Two Hundred Seventeen

Basics

Value: -126218 → -126217 → -126216

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 13 × 19 × 73

Divisors: 1, 7, 13, 19, 73, 91, 133, 247, 511, 949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110110100001001

Octal: -366411

Duodecimal: -61061

Hexadecimal: -1ed09

Square: 15930731089

Square Root: 355.27031961592286

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

Carmichael numbers: composite numbers k such that a^k-1 == 1 (mod k) for every a coprime to k. A2997

Composite numbers k such that k == +-1 (mod 8) and 2^(k-1/2) == 1 (mod k). A6971

Pseudoprimes to both base 2 and base 3, i.e., intersection of A001567 and A005935. A52155

Pseudoprimes to bases 2, 3 and 5. A83737

Carmichael numbers with exactly 4 prime factors. A74379

Composite numbers n such that gcd(φ(n), n-1) = λ(n), where λ(n) = A002322(n). A264012

Composite numbers k == 1, 11 (mod 12) such that 3^(k-1/2) == 1 (mod k). A375917

Carmichael numbers with more than 3 prime factors. A141711

Composite numbers k == 1 (mod 4) such that (1 + i)^k == 1 + i (mod k), where i = sqrt(-1). A270698

Carmichael numbers ending in 7. A355307