42839520 has 96 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 11051520.

The previous prime is 42839479. The next prime is 42839557. The reversal of 42839520 is 2593824.

It is a happy number.

42839520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13441 + ... + 16319.

It is an arithmetic number, because the mean of its divisors is an integer number (1451520).

Almost surely, 2^42839520 is an apocalyptic number.

42839520 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 42839520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69672960).

42839520 is an abundant number, since it is smaller than the sum of its proper divisors (96506400).

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

42839520 is a wasteful number, since it uses less digits than its factorization.

42839520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928 (or 2920 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 42839520 is about 6545.1906007388. The cubic root of 42839520 is about 349.9034291392.

The spelling of 42839520 in words is "forty-two million, eight hundred thirty-nine thousand, five hundred twenty".