Properties of the Number 40121

Forty Thousand One Hundred Twenty-One

Basics

Value: 40120 → 40121 → 40122

Parity: odd

Prime: No

Previous Prime: 40111

Next Prime: 40123

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 53 × 757

Divisors: 1, 53, 757, 40121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110010111001

Octal: 116271

Duodecimal: 1B275

Hexadecimal: 9cb9

Square: 1609694641

Square Root: 200.30227157973022

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

Numbers n such that prime(n) == -5 (mod n). A92047

a(n) is the largest number m such that m = π(n·m). A102281

Values of transition of A072608(n) from alternating behavior (0,1,0,1,..) into steadily-1 (1,1,1,..) behavior or changing back. Expressing in terms of A072609(n): at n values it switches from steadily 0 into steadily 1 successive values or back. A72610

Expansion of 1/((1-2x)(1-5x)(1-6x)(1-9x)). A25988

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 36. A31624

Numbers n such that prime(n) + prime(n+1) is divisible by 2n + 1. A278693

Numbers k such that floor(prime(k)/k) < floor(prime(k+1)/(k+1)). A308082

Primes p such that x⁴ = 10 has no solution mod p. A40121

a(n) = 12n - prime(n). A245071

Primes in the sequence 12·n - prime(n), (A245071). A245650