42054017680 has 20 divisors (see below), whose sum is σ = 97775591292. Its totient is φ = 16821607040.

The previous prime is 42054017647. The next prime is 42054017683. The reversal of 42054017680 is 8671045024.

It can be written as a sum of positive squares in 2 ways, for example, as 31609995264 + 10444022416 = 177792^2 + 102196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (42054017683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262837531 + ... + 262837690.

Almost surely, 2^42054017680 is an apocalyptic number.

42054017680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42054017680 is an abundant number, since it is smaller than the sum of its proper divisors (55721573612).

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

42054017680 is a wasteful number, since it uses less digits than its factorization.

42054017680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525675234 (or 525675228 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 42054017680 in words is "forty-two billion, fifty-four million, seventeen thousand, six hundred eighty".