9139742 has 8 divisors (see below), whose sum is σ = 13735656. Its totient is φ = 4561192.

The previous prime is 9139723. The next prime is 9139751. The reversal of 9139742 is 2479319.

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

It is a congruent number.

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, 2933 + ... + 5184.

It is an arithmetic number, because the mean of its divisors is an integer number (1716957).

Almost surely, 2^9139742 is an apocalyptic number.

9139742 is a deficient number, since it is larger than the sum of its proper divisors (4595914).

9139742 is a wasteful number, since it uses less digits than its factorization.

9139742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682.

The product of its digits is 13608, while the sum is 35.

The square root of 9139742 is about 3023.2006218576. The cubic root of 9139742 is about 209.0794322738.

The spelling of 9139742 in words is "nine million, one hundred thirty-nine thousand, seven hundred forty-two".