42004572 has 12 divisors (see below), whose sum is σ = 98010696. Its totient is φ = 14001520.

The previous prime is 42004561. The next prime is 42004577. The reversal of 42004572 is 27540024.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750179 + ... + 1750202.

It is an arithmetic number, because the mean of its divisors is an integer number (8167558).

Almost surely, 2^42004572 is an apocalyptic number.

It is an amenable number.

42004572 is an abundant number, since it is smaller than the sum of its proper divisors (56006124).

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

42004572 is a wasteful number, since it uses less digits than its factorization.

42004572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500388 (or 3500386 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 42004572 is about 6481.0934262669. The cubic root of 42004572 is about 347.6152770420.

Adding to 42004572 its reverse (27540024), we get a palindrome (69544596).

The spelling of 42004572 in words is "forty-two million, four thousand, five hundred seventy-two".