9639142642 has 8 divisors (see below), whose sum is σ = 14478825600. Its totient is φ = 4812867444.

The previous prime is 9639142607. The next prime is 9639142691. The reversal of 9639142642 is 2462419369.

9639142642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 9639142592 and 9639142601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350142 + ... + 3353017.

It is an arithmetic number, because the mean of its divisors is an integer number (1809853200).

Almost surely, 2^9639142642 is an apocalyptic number.

9639142642 is a deficient number, since it is larger than the sum of its proper divisors (4839682958).

9639142642 is a wasteful number, since it uses less digits than its factorization.

9639142642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703880.

The product of its digits is 559872, while the sum is 46.

The square root of 9639142642 is about 98179.1354718506. The cubic root of 9639142642 is about 2128.2017813318.

The spelling of 9639142642 in words is "nine billion, six hundred thirty-nine million, one hundred forty-two thousand, six hundred forty-two".