82105039 has 8 divisors (see below), whose sum is σ = 83734560. Its totient is φ = 80488800.

The previous prime is 82105031. The next prime is 82105043. The reversal of 82105039 is 93050128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82105039 - 2³ = 82105031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82104998 and 82105016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82105031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9657 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (10466820).

Almost surely, 2^82105039 is an apocalyptic number.

82105039 is a deficient number, since it is larger than the sum of its proper divisors (1629521).

82105039 is a wasteful number, since it uses less digits than its factorization.

82105039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 82105039 is about 9061.1830905241. The cubic root of 82105039 is about 434.6335734865.

The spelling of 82105039 in words is "eighty-two million, one hundred five thousand, thirty-nine".