Properties of the Number 741

Seven Hundred Forty-One

Basics

Value: 740 → 741 → 742

Parity: odd

Prime: No

Previous Prime: 739

Next Prime: 743

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 19

Divisors: 1, 3, 13, 19, 39, 57, 247, 741

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011100101

Octal: 1345

Duodecimal: 519

Hexadecimal: 2e5

Square: 549081

Square Root: 27.2213151776324

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

Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n. A217

Second hexagonal numbers: a(n) = n*(2·n + 1). A14105

a(n) = binomial(n,2): number of size-2 subsets of {0,1,...,n} that contain no consecutive integers. A161680

Sum of divisors of square numbers. A65764

a(n) = (n³ + 2·n)/3. A6527

Number of sublattices of index n in generic 3-dimensional lattice. A1001

Average of twin prime pairs (A014574), divided by 2. Equivalently, 2·a(n)-1 and 2·a(n)+1 are primes. A40040

Products of exactly three distinct odd primes. A46389

Binomial coefficients: C(n,k), 2 <= k <= n-2, sorted, duplicates removed. A6987

Numbers m such that there are precisely 5 groups of order m. A54397