9742742 has 8 divisors (see below), whose sum is σ = 15085632. Its totient is φ = 4714200.

The previous prime is 9742739. The next prime is 9742757. The reversal of 9742742 is 2472479.

It is a happy number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78509 + ... + 78632.

It is an arithmetic number, because the mean of its divisors is an integer number (1885704).

Almost surely, 2^9742742 is an apocalyptic number.

9742742 is a deficient number, since it is larger than the sum of its proper divisors (5342890).

9742742 is a wasteful number, since it uses less digits than its factorization.

9742742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157174.

The product of its digits is 28224, while the sum is 35.

The square root of 9742742 is about 3121.3365726881. The cubic root of 9742742 is about 213.5799107433.

The spelling of 9742742 in words is "nine million, seven hundred forty-two thousand, seven hundred forty-two".