Properties of the Number 4121

Four Thousand One Hundred Twenty-One

Basics

Value: 4120 → 4121 → 4122

Parity: odd

Prime: No

Previous Prime: 4111

Next Prime: 4127

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 13 × 317

Divisors: 1, 13, 317, 4121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1000000011001

Octal: 10031

Duodecimal: 2475

Hexadecimal: 1019

Square: 16982641

Square Root: 64.19501538281614

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

Positive numbers for which the sum of digits equals the product of digits. A34710

Number of times prime(n) occurs as the least prime factor among numbers 1 .. prime(n)³: a(n) = A078898(A030078(n)). A250474

Numbers k such that 11·12^k - 1 is prime. A79907

Number of integer partitions of n with a neighborless singleton. A356235

Numbers k such that numerator(Bernoulli(2·k)/(2·k)) is different from numerator(Bernoulli(2·k)/(2·k*(2·k-1))). A90495

First differences of A014292. A104862

T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A279709

Number of non-alternating patterns of length n. A350252

a(n) = 2ⁿ + 2·n + 1. A176691

Irregular array read by rows in which row floor(k/3)+1, where gcd(k,6)=1, lists the smallest elements, in ascending order, of conjecturally all primitive cycles of positive integers under iteration by the 3x+k function. A226607