42643075072 has 78 divisors (see below), whose sum is σ = 92341500612. Its totient is φ = 19681099776.

The previous prime is 42643075039. The next prime is 42643075093. The reversal of 42643075072 is 27057034624.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661423 + ... + 723025.

Almost surely, 2^42643075072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42643075072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46170750306).

42643075072 is an abundant number, since it is smaller than the sum of its proper divisors (49698425540).

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

42643075072 is an equidigital number, since it uses as much as digits as its factorization.

42643075072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61653 (or 61618 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 42643075072 in words is "forty-two billion, six hundred forty-three million, seventy-five thousand, seventy-two".