42739510856 has 32 divisors (see below), whose sum is σ = 91591655040. Its totient is φ = 18315535488.

The previous prime is 42739510831. The next prime is 42739510883. The reversal of 42739510856 is 65801593724.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095965 + ... + 1134291.

It is an arithmetic number, because the mean of its divisors is an integer number (2862239220).

It is a 1-persistent number, because it is pandigital, but 2⋅42739510856 = 85479021712 is not.

Almost surely, 2^42739510856 is an apocalyptic number.

It is an amenable number.

42739510856 is an abundant number, since it is smaller than the sum of its proper divisors (48852144184).

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

42739510856 is a wasteful number, since it uses less digits than its factorization.

42739510856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58253 (or 58249 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 42739510856 in words is "forty-two billion, seven hundred thirty-nine million, five hundred ten thousand, eight hundred fifty-six".