42004434 has 8 divisors (see below), whose sum is σ = 84008880. Its totient is φ = 14001476.

The previous prime is 42004429. The next prime is 42004439. The reversal of 42004434 is 43440024.

42004434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42004429) and next prime (42004439).

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

42004434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42004434.

It is not an unprimeable number, because it can be changed into a prime (42004439) 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 3 ways as a sum of consecutive naturals, for example, 3500364 + ... + 3500375.

It is an arithmetic number, because the mean of its divisors is an integer number (10501110).

Almost surely, 2^42004434 is an apocalyptic number.

42004434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42004434 is a wasteful number, since it uses less digits than its factorization.

42004434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000744.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42004434 is about 6481.0827799065. The cubic root of 42004434 is about 347.6148963615.

Adding to 42004434 its reverse (43440024), we get a palindrome (85444458).

The spelling of 42004434 in words is "forty-two million, four thousand, four hundred thirty-four".