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Properties of the Number -162401

One Hundred Sixty-Two Thousand Four Hundred One

Basics

Value: -162402 → -162401 → -162400

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 17 × 41 × 233

Divisors: 1, 17, 41, 233, 697, 3961, 9553, 162401

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111101001100001

Octal: -475141

Duodecimal: -79B95

Hexadecimal: -27a61

Square: 26374084801

Square Root: 402.9900743194552

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 ak-1 == 1 (mod k) for every a coprime to k. A2997
3-Carmichael numbers: Carmichael numbers equal to the product of 3 primes: k = p·q*r, where p < q < r are primes such that ak-1 == 1 (mod k) if a is prime to k. A87788
Pseudoprimes to both base 2 and base 3, i.e., intersection of A001567 and A005935. A52155
Terms of A324315 (squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p) that are also octagonal numbers (A000567) with index equal to their largest prime factor. A324320
Pseudoprimes to bases 2, 3 and 5. A83737
Carmichael numbers k for which A053575(k) [the odd part of φ] divides k-1. A339869
Absolute Euler pseudoprimes: odd composite numbers n such that a(n-1/2) == +-1 (mod n) for every a coprime to n. A33181
Least pseudoprime to base 2 through base prime(n). A83876
a(n) is the smallest Carmichael number (A002997) with the n-th prime as its smallest prime divisor, or 0 if no such number exists. A135720
Composite numbers n with the property that φ(n) divides (n-1)2. A173703