42504005 has 16 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 33417792.

The previous prime is 42504001. The next prime is 42504017. The reversal of 42504005 is 50040524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42504005 - 2² = 42504001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42504001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90782 + ... + 91248.

It is an arithmetic number, because the mean of its divisors is an integer number (3243240).

Almost surely, 2^42504005 is an apocalyptic number.

It is an amenable number.

42504005 is a deficient number, since it is larger than the sum of its proper divisors (9387835).

42504005 is a wasteful number, since it uses less digits than its factorization.

42504005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 42504005 is about 6519.5095674445. The cubic root of 42504005 is about 348.9875639720.

Adding to 42504005 its reverse (50040524), we get a palindrome (92544529).

The spelling of 42504005 in words is "forty-two million, five hundred four thousand, five".