6642571342 has 32 divisors (see below), whose sum is σ = 11548759680. Its totient is φ = 2833685280.

The previous prime is 6642571339. The next prime is 6642571363. The reversal of 6642571342 is 2431752466.

It is a junction number, because it is equal to n+sod(n) for n = 6642571295 and 6642571304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29533 + ... + 118984.

It is an arithmetic number, because the mean of its divisors is an integer number (360898740).

Almost surely, 2^6642571342 is an apocalyptic number.

6642571342 is a deficient number, since it is larger than the sum of its proper divisors (4906188338).

6642571342 is a wasteful number, since it uses less digits than its factorization.

6642571342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148656.

The product of its digits is 241920, while the sum is 40.

The square root of 6642571342 is about 81501.9713994698. The cubic root of 6642571342 is about 1879.8018636442.

The spelling of 6642571342 in words is "six billion, six hundred forty-two million, five hundred seventy-one thousand, three hundred forty-two".