9709742 has 12 divisors (see below), whose sum is σ = 16942680. Its totient is φ = 4161276.

The previous prime is 9709723. The next prime is 9709757. The reversal of 9709742 is 2479079.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9709696 and 9709705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49442 + ... + 49637.

It is an arithmetic number, because the mean of its divisors is an integer number (1411890).

Almost surely, 2^9709742 is an apocalyptic number.

9709742 is a deficient number, since it is larger than the sum of its proper divisors (7232938).

9709742 is a wasteful number, since it uses less digits than its factorization.

9709742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99095 (or 99088 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 9709742 is about 3116.0458918315. The cubic root of 9709742 is about 213.3384965113.

The spelling of 9709742 in words is "nine million, seven hundred nine thousand, seven hundred forty-two".