42004112 has 20 divisors (see below), whose sum is σ = 82719036. Its totient is φ = 20657280.

The previous prime is 42004111. The next prime is 42004129. The reversal of 42004112 is 21140024.

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 41165056 = 916^2 + 6416^2 .

It is not an unprimeable number, because it can be changed into a prime (42004111) 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, 20543 + ... + 22494.

Almost surely, 2^42004112 is an apocalyptic number.

It is an amenable number.

42004112 is a deficient number, since it is larger than the sum of its proper divisors (40714924).

42004112 is a wasteful number, since it uses less digits than its factorization.

42004112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43106 (or 43100 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42004112 is about 6481.0579383307. The cubic root of 42004112 is about 347.6140081038.

Adding to 42004112 its reverse (21140024), we get a palindrome (63144136).

The spelling of 42004112 in words is "forty-two million, four thousand, one hundred twelve".