42404032 has 112 divisors (see below), whose sum is σ = 99486720. Its totient is φ = 17740800.

The previous prime is 42404027. The next prime is 42404039. The reversal of 42404032 is 23040424.

It is not an unprimeable number, because it can be changed into a prime (42404039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632863 + ... + 632929.

Almost surely, 2^42404032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42404032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49743360).

42404032 is an abundant number, since it is smaller than the sum of its proper divisors (57082688).

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

42404032 is a wasteful number, since it uses less digits than its factorization.

42404032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42404032 is about 6511.8378358187. The cubic root of 42404032 is about 348.7137331197.

Adding to 42404032 its reverse (23040424), we get a palindrome (65444456).

The spelling of 42404032 in words is "forty-two million, four hundred four thousand, thirty-two".