42005604 has 24 divisors (see below), whose sum is σ = 98139328. Its totient is φ = 13983840.

The previous prime is 42005591. The next prime is 42005617. The reversal of 42005604 is 40650024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42005591) and next prime (42005617).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10209 + ... + 13719.

Almost surely, 2^42005604 is an apocalyptic number.

It is an amenable number.

42005604 is an abundant number, since it is smaller than the sum of its proper divisors (56133724).

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

42005604 is a wasteful number, since it uses less digits than its factorization.

42005604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515 (or 4513 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42005604 is about 6481.1730419732. The cubic root of 42005604 is about 347.6181238434.

Adding to 42005604 its reverse (40650024), we get a palindrome (82655628).

The spelling of 42005604 in words is "forty-two million, five thousand, six hundred four".