9728042 has 4 divisors (see below), whose sum is σ = 14592066. Its totient is φ = 4864020.

The previous prime is 9728039. The next prime is 9728051. The reversal of 9728042 is 2408279.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8014561 + 1713481 = 2831^2 + 1309^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2432009 + ... + 2432012.

Almost surely, 2^9728042 is an apocalyptic number.

9728042 is a deficient number, since it is larger than the sum of its proper divisors (4864024).

9728042 is a wasteful number, since it uses less digits than its factorization.

9728042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864023.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 9728042 is about 3118.9809233145. The cubic root of 9728042 is about 213.4724391146.

The spelling of 9728042 in words is "nine million, seven hundred twenty-eight thousand, forty-two".