42169642872 has 128 divisors (see below), whose sum is σ = 128612966400. Its totient is φ = 11253513600.

The previous prime is 42169642861. The next prime is 42169642873. The reversal of 42169642872 is 27824696124.

42169642872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42169642873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133597 + ... + 319667.

It is an arithmetic number, because the mean of its divisors is an integer number (1004788800).

Almost surely, 2^42169642872 is an apocalyptic number.

42169642872 is a gapful number since it is divisible by the number (42) 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 42169642872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64306483200).

42169642872 is an abundant number, since it is smaller than the sum of its proper divisors (86443323528).

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

42169642872 is a wasteful number, since it uses less digits than its factorization.

42169642872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186177 (or 186173 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 42169642872 in words is "forty-two billion, one hundred sixty-nine million, six hundred forty-two thousand, eight hundred seventy-two".