27920009042 has 8 divisors (see below), whose sum is σ = 41889551436. Its totient is φ = 13956825232.

The previous prime is 27920009027. The next prime is 27920009053. The reversal of 27920009042 is 24090002972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27785889481 + 134119561 = 166691^2 + 11581^2 .

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 = 27920008993 and 27920009011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578653 + ... + 1596240.

Almost surely, 2^27920009042 is an apocalyptic number.

27920009042 is a deficient number, since it is larger than the sum of its proper divisors (13969542394).

27920009042 is a wasteful number, since it uses less digits than its factorization.

27920009042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179292.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 27920009042 in words is "twenty-seven billion, nine hundred twenty million, nine thousand, forty-two".