12178523042 has 32 divisors (see below), whose sum is σ = 21572987904. Its totient is φ = 5045832000.

The previous prime is 12178523033. The next prime is 12178523083. The reversal of 12178523042 is 24032587121.

12178523042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12178522993 and 12178523011.

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 15 ways as a sum of consecutive naturals, for example, 425792 + ... + 453492.

It is an arithmetic number, because the mean of its divisors is an integer number (674155872).

Almost surely, 2^12178523042 is an apocalyptic number.

12178523042 is a deficient number, since it is larger than the sum of its proper divisors (9394464862).

12178523042 is a wasteful number, since it uses less digits than its factorization.

12178523042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28754.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 12178523042 in words is "twelve billion, one hundred seventy-eight million, five hundred twenty-three thousand, forty-two".