42900032 has 56 divisors (see below), whose sum is σ = 100462080. Its totient is φ = 17786880.

The previous prime is 42900031. The next prime is 42900041. The reversal of 42900032 is 23000924.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 42899977 and 42900013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42900031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12344 + ... + 15432.

Almost surely, 2^42900032 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 42900032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50231040).

42900032 is an abundant number, since it is smaller than the sum of its proper divisors (57562048).

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

42900032 is a wasteful number, since it uses less digits than its factorization.

42900032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 42900032 is about 6549.8116003439. The cubic root of 42900032 is about 350.0681010341.

Adding to 42900032 its reverse (23000924), we get a palindrome (65900956).

The spelling of 42900032 in words is "forty-two million, nine hundred thousand, thirty-two".