42331605 has 32 divisors (see below), whose sum is σ = 69803904. Its totient is φ = 21897216.

The previous prime is 42331603. The next prime is 42331607. The reversal of 42331605 is 50613324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42331603) and next prime (42331607).

It is not a de Polignac number, because 42331605 - 2¹ = 42331603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42331603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73077 + ... + 73653.

It is an arithmetic number, because the mean of its divisors is an integer number (2181372).

Almost surely, 2^42331605 is an apocalyptic number.

It is an amenable number.

42331605 is a deficient number, since it is larger than the sum of its proper divisors (27472299).

42331605 is a wasteful number, since it uses less digits than its factorization.

42331605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 42331605 is about 6506.2742794936. The cubic root of 42331605 is about 348.5150831215.

Adding to 42331605 its reverse (50613324), we get a palindrome (92944929).

The spelling of 42331605 in words is "forty-two million, three hundred thirty-one thousand, six hundred five".