Properties of the Number 12103

Twelve Thousand One Hundred Three

Basics

Value: 12102 → 12103 → 12104

Parity: odd

Prime: No

Previous Prime: 12101

Next Prime: 12107

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 7 ² × 13 × 19

Divisors: 1, 7, 13, 19, 49, 91, 133, 247, 637, 931

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111101000111

Octal: 27507

Duodecimal: 7007

Hexadecimal: 2f47

Square: 146482609

Square Root: 110.01363551851198

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 k such that k, k + 1 and k + 2 are 3 consecutive Harshad numbers. A154701

Numbers k such that 2^k - k² is prime. A72180

Multiples of 7 whose sum of digits is equal to 7. A63416

Number of n-bead bracelets (turnover necklaces) of two colors with 6 red beads and n-6 black beads. A5513

Squared radii of circles around a point of the hexagonal lattice that contain a record number of lattice points. A230655

Composites whose prime factorization in base 3 is an anagram of the number in base 3. A260047

Numbers n whose square can be represented as a repdigit number in some base less than n. A158235

Smallest k such that circle centered at the origin and with radius sqrt(k) passes through exactly 6·n integer points in the hexagonal lattice (see A004016). A343771

Number of 4-block ordered tricoverings of an unlabeled n-set. A60488

Smallest m such that m can be written in exactly n ways as x² + xy + y² with 0 <= x <= y. A198799