42859520 has 88 divisors (see below), whose sum is σ = 112306608. Its totient is φ = 15564800.

The previous prime is 42859513. The next prime is 42859529. The reversal of 42859520 is 2595824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42859529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 55940 + ... + 56700.

Almost surely, 2^42859520 is an apocalyptic number.

42859520 is a gapful number since it is divisible by the number (40) 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 42859520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56153304).

42859520 is an abundant number, since it is smaller than the sum of its proper divisors (69447088).

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

42859520 is a wasteful number, since it uses less digits than its factorization.

42859520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 42859520 is about 6546.7182618469. The cubic root of 42859520 is about 349.9578724806.

The spelling of 42859520 in words is "forty-two million, eight hundred fifty-nine thousand, five hundred twenty".