Properties of the Number 75420

Seventy-Five Thousand Four Hundred Twenty

Basics

Value: 75419 → 75420 → 75421

Parity: even

Prime: No

Previous Prime: 75407

Next Prime: 75431

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 419

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010011010011100

Octal: 223234

Duodecimal: 37790

Hexadecimal: 1269c

Square: 5688176400

Square Root: 274.6270197922994

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

a(n) = ∑_k=1..n binomial(k, n mod k). A72951

Partial sums of A029940 (∏_d∣n φ(d)). A280131

Trajectory of n under the Reverse and Add! operation carried out in base 4 (presumably) does not reach a palindrome. A75420