42859287840 has 48 divisors (see below), whose sum is σ = 135006758208. Its totient is φ = 11429143296.

The previous prime is 42859287799. The next prime is 42859287841. The reversal of 42859287840 is 4878295824.

42859287840 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 (48).

It is not an unprimeable number, because it can be changed into a prime (42859287841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44644612 + ... + 44645571.

It is an arithmetic number, because the mean of its divisors is an integer number (2812640796).

Almost surely, 2^42859287840 is an apocalyptic number.

42859287840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42859287840 is an abundant number, since it is smaller than the sum of its proper divisors (92147470368).

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

42859287840 is a wasteful number, since it uses less digits than its factorization.

42859287840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89290201 (or 89290193 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 42859287840 in words is "forty-two billion, eight hundred fifty-nine million, two hundred eighty-seven thousand, eight hundred forty".