42622165 has 16 divisors (see below), whose sum is σ = 52662960. Its totient is φ = 33095680.

The previous prime is 42622163. The next prime is 42622169. The reversal of 42622165 is 56122624.

42622165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1572516 + 41049649 = 1254^2 + 6407^2 .

It is not a de Polignac number, because 42622165 - 2¹ = 42622163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42622163) 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 15 ways as a sum of consecutive naturals, for example, 52281 + ... + 53089.

It is an arithmetic number, because the mean of its divisors is an integer number (3291435).

Almost surely, 2^42622165 is an apocalyptic number.

It is an amenable number.

42622165 is a deficient number, since it is larger than the sum of its proper divisors (10040795).

42622165 is a wasteful number, since it uses less digits than its factorization.

42622165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 5760, while the sum is 28.

The square root of 42622165 is about 6528.5653094688. The cubic root of 42622165 is about 349.3106567995.

Adding to 42622165 its reverse (56122624), we get a palindrome (98744789).

The spelling of 42622165 in words is "forty-two million, six hundred twenty-two thousand, one hundred sixty-five".