42203928 has 128 divisors (see below), whose sum is σ = 123076800. Its totient is φ = 11943936.

The previous prime is 42203867. The next prime is 42203929. The reversal of 42203928 is 82930224.

42203928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42203895 and 42203904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42203929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387138 + ... + 387246.

Almost surely, 2^42203928 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 42203928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61538400).

42203928 is an abundant number, since it is smaller than the sum of its proper divisors (80872872).

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

42203928 is a wasteful number, since it uses less digits than its factorization.

42203928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 42203928 is about 6496.4550333239. The cubic root of 42203928 is about 348.1643430400.

The spelling of 42203928 in words is "forty-two million, two hundred three thousand, nine hundred twenty-eight".