Properties of the Number -1241

Two Hundred Forty-One

Basics

Value: -1242 → -1241 → -1240

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 17 × 73

Divisors: 1, 17, 73, 1241

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10011011001

Octal: -2331

Duodecimal: -875

Hexadecimal: -4d9

Square: 1540081

Square Root: 35.22782990761707

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

Matrix inverse, read by rows, of triangle A104029, which forms the pairwise sums of trinomial coefficients. A104030

G.f.: exp( ∑_n>=1 A002129(n²)*xⁿ/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n. A225925

Numbers that are the sum of 2 positive cubes. A3325

Centered cube numbers: n³ + (n+1)³. A5898

The "comma sequence": the lexicographically earliest sequence of positive numbers with the property that the sequence formed by the pairs of digits adjacent to the commas between the terms is the same as the sequence of successive differences between the terms. A121805

11-gonal (or hendecagonal) numbers: a(n) = n*(9·n-7)/2. A51682

Twice partitioned numbers where the first partition is strict. A271619

Fifth spoke of a hexagonal spiral. A56109

Generalized 11-gonal (or hendecagonal) numbers: m*(9·m - 7)/2 with m = 0, 1, -1, 2, -2, 3, -3, ... A195160

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