42040165 has 8 divisors (see below), whose sum is σ = 51159168. Its totient is φ = 33158160.

The previous prime is 42040157. The next prime is 42040199. The reversal of 42040165 is 56104024.

42040165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42040165 - 2³ = 42040157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 58857 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (6394896).

Almost surely, 2^42040165 is an apocalyptic number.

It is an amenable number.

42040165 is a deficient number, since it is larger than the sum of its proper divisors (9119003).

42040165 is a wasteful number, since it uses less digits than its factorization.

42040165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118499.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 42040165 is about 6483.8387549352. The cubic root of 42040165 is about 347.7134344322.

Adding to 42040165 its reverse (56104024), we get a palindrome (98144189).

The spelling of 42040165 in words is "forty-two million, forty thousand, one hundred sixty-five".