9729742 has 16 divisors (see below), whose sum is σ = 16353072. Its totient is φ = 4302720.

The previous prime is 9729697. The next prime is 9729743. The reversal of 9729742 is 2479279.

It is a junction number, because it is equal to n+sod(n) for n = 9729695 and 9729704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729743) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5163 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (1022067).

Almost surely, 2^9729742 is an apocalyptic number.

9729742 is a deficient number, since it is larger than the sum of its proper divisors (6623330).

9729742 is a wasteful number, since it uses less digits than its factorization.

9729742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003.

The product of its digits is 63504, while the sum is 40.

The square root of 9729742 is about 3119.2534363209. The cubic root of 9729742 is about 213.4848733403.

The spelling of 9729742 in words is "nine million, seven hundred twenty-nine thousand, seven hundred forty-two".