39135742 has 16 divisors (see below), whose sum is σ = 61806240. Its totient is φ = 18548992.

The previous prime is 39135721. The next prime is 39135743. The reversal of 39135742 is 24753193.

It is a junction number, because it is equal to n+sod(n) for n = 39135698 and 39135707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39135743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434 + ... + 8962.

It is an arithmetic number, because the mean of its divisors is an integer number (3862890).

Almost surely, 2^39135742 is an apocalyptic number.

39135742 is a deficient number, since it is larger than the sum of its proper divisors (22670498).

39135742 is a wasteful number, since it uses less digits than its factorization.

39135742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667.

The product of its digits is 22680, while the sum is 34.

The square root of 39135742 is about 6255.8566160039. The cubic root of 39135742 is about 339.5141330064.

The spelling of 39135742 in words is "thirty-nine million, one hundred thirty-five thousand, seven hundred forty-two".