Properties of the Number 40425

Forty Thousand Four Hundred Twenty-Five

Basics

Value: 40424 → 40425 → 40426

Parity: odd

Prime: No

Previous Prime: 40423

Next Prime: 40427

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 7 ² × 11

Divisors: 1, 3, 5, 7, 11, 15, 21, 25, 33, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110111101001

Octal: 116751

Duodecimal: 1B489

Hexadecimal: 9de9

Square: 1634180625

Square Root: 201.05969262883102

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

Structured rhombic dodecahedral numbers (vertex structure 9). A100157

a(n) = n + (n+1)² + (n+2)³. A27620

a(n) = gcd(A260443(n), A260443(n+1)). A277198

Numbers with exactly 4 distinct odd prime divisors {3,5,7,11}. A147577

a(n) = A059895(A260443(n), A260443(1+n)). A284578

a(1)=6; if n = Product p_i^e_i, n>1, then a(n) = Product p_i+1^e_i·Product p_i+2^e_i. A45969

Odd bisection of A283983; square root of the largest square dividing A277324. A283484

Numbers n=2·k-1 where ∑_j=1..k (-1)^j+1 * d(2·j-1) achieves a new record, with d(n) = number of divisors of n (A000005). A318737

a(n) = n*(n+2)². A152619

Number of inequivalent (modulo C₄ rotations) square n X n grids with squares coming in two colors and three squares have one of the colors. A275799