42005654660 has 24 divisors (see below), whose sum is σ = 88244079000. Its totient is φ = 16796127744.

The previous prime is 42005654617. The next prime is 42005654687. The reversal of 42005654660 is 6645650024.

It can be written as a sum of positive squares in 4 ways, for example, as 2461945924 + 39543708736 = 49618^2 + 198856^2 .

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, 327029 + ... + 436988.

It is an arithmetic number, because the mean of its divisors is an integer number (3676836625).

Almost surely, 2^42005654660 is an apocalyptic number.

It is an amenable number.

42005654660 is an abundant number, since it is smaller than the sum of its proper divisors (46238424340).

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

42005654660 is a wasteful number, since it uses less digits than its factorization.

42005654660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766775 (or 766773 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 42005654660 in words is "forty-two billion, five million, six hundred fifty-four thousand, six hundred sixty".