42165039 has 24 divisors (see below), whose sum is σ = 65659440. Its totient is φ = 23998464.

The previous prime is 42165031. The next prime is 42165041. The reversal of 42165039 is 93056124.

42165039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42165039 - 2³ = 42165031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42164997 and 42165015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54447 + ... + 55215.

It is an arithmetic number, because the mean of its divisors is an integer number (2735810).

Almost surely, 2^42165039 is an apocalyptic number.

42165039 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42165039 is a deficient number, since it is larger than the sum of its proper divisors (23494401).

42165039 is a wasteful number, since it uses less digits than its factorization.

42165039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 42165039 is about 6493.4612495956. The cubic root of 42165039 is about 348.0573709747.

The spelling of 42165039 in words is "forty-two million, one hundred sixty-five thousand, thirty-nine".