3990531012742 has 8 divisors (see below), whose sum is σ = 5985950825232. Its totient is φ = 1995214071000.

The previous prime is 3990531012731. The next prime is 3990531012757. The reversal of 3990531012742 is 2472101350993.

It is a happy number.

3990531012742 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 = 3990531012692 and 3990531012701.

It is a congruent number.

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, 25620634 + ... + 25775917.

It is an arithmetic number, because the mean of its divisors is an integer number (748243853154).

Almost surely, 2^{3990531012742} is an apocalyptic number.

3990531012742 is a deficient number, since it is larger than the sum of its proper divisors (1995419812490).

3990531012742 is a wasteful number, since it uses less digits than its factorization.

3990531012742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51435374.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 3990531012742 in words is "three trillion, nine hundred ninety billion, five hundred thirty-one million, twelve thousand, seven hundred forty-two".