42175568642 has 8 divisors (see below), whose sum is σ = 63725129676. Its totient is φ = 20933858752.

The previous prime is 42175568629. The next prime is 42175568689. The reversal of 42175568642 is 24686557124.

It can be written as a sum of positive squares in 2 ways, for example, as 41469656881 + 705911761 = 203641^2 + 26569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76962443 + ... + 76962990.

Almost surely, 2^42175568642 is an apocalyptic number.

42175568642 is a deficient number, since it is larger than the sum of its proper divisors (21549561034).

42175568642 is a wasteful number, since it uses less digits than its factorization.

42175568642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153925572.

The product of its digits is 3225600, while the sum is 50.

The spelling of 42175568642 in words is "forty-two billion, one hundred seventy-five million, five hundred sixty-eight thousand, six hundred forty-two".