42870528 has 108 divisors (see below), whose sum is σ = 129139920. Its totient is φ = 13651968.

The previous prime is 42870493. The next prime is 42870547. The reversal of 42870528 is 82507824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42870492 and 42870501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52588 + ... + 53396.

It is an arithmetic number, because the mean of its divisors is an integer number (1195740).

Almost surely, 2^42870528 is an apocalyptic number.

42870528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42870528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64569960).

42870528 is an abundant number, since it is smaller than the sum of its proper divisors (86269392).

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

42870528 is a wasteful number, since it uses less digits than its factorization.

42870528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 42870528 is about 6547.5589344427. The cubic root of 42870528 is about 349.9878308694.

The spelling of 42870528 in words is "forty-two million, eight hundred seventy thousand, five hundred twenty-eight".