105820039 has 8 divisors (see below), whose sum is σ = 114212672. Its totient is φ = 97463520.

The previous prime is 105820031. The next prime is 105820049. The reversal of 105820039 is 930028501.

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 105820039 - 2³ = 105820031 is a prime.

It is a super-2 number, since 2×105820039² = 22395761307923042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105819989 and 105820016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105820031) 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, 2772 + ... + 14809.

It is an arithmetic number, because the mean of its divisors is an integer number (14276584).

Almost surely, 2^105820039 is an apocalyptic number.

105820039 is a deficient number, since it is larger than the sum of its proper divisors (8392633).

105820039 is a wasteful number, since it uses less digits than its factorization.

105820039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18057.

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

The square root of 105820039 is about 10286.8867496439. The cubic root of 105820039 is about 472.9943710993.

The spelling of 105820039 in words is "one hundred five million, eight hundred twenty thousand, thirty-nine".