42385128 has 64 divisors (see below), whose sum is σ = 110808000. Its totient is φ = 13496832.

The previous prime is 42385081. The next prime is 42385129. The reversal of 42385128 is 82158324.

It is not an unprimeable number, because it can be changed into a prime (42385129) 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, 51988 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (1731375).

Almost surely, 2^42385128 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 42385128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55404000).

42385128 is an abundant number, since it is smaller than the sum of its proper divisors (68422872).

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

42385128 is a wasteful number, since it uses less digits than its factorization.

42385128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 910 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 42385128 is about 6510.3861636619. The cubic root of 42385128 is about 348.6619057821.

The spelling of 42385128 in words is "forty-two million, three hundred eighty-five thousand, one hundred twenty-eight".