42908032 has 32 divisors (see below), whose sum is σ = 86353200. Its totient is φ = 21235200.

The previous prime is 42908029. The next prime is 42908053. The reversal of 42908032 is 23080924.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×42908032² = 3682198420226048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11269 + ... + 14587.

Almost surely, 2^42908032 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 42908032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43176600).

42908032 is an abundant number, since it is smaller than the sum of its proper divisors (43445168).

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

42908032 is a wasteful number, since it uses less digits than its factorization.

42908032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 42908032 is about 6550.4222764643. The cubic root of 42908032 is about 350.0898599204.

Adding to 42908032 its reverse (23080924), we get a palindrome (65988956).

The spelling of 42908032 in words is "forty-two million, nine hundred eight thousand, thirty-two".