9904042 has 16 divisors (see below), whose sum is σ = 15309000. Its totient is φ = 4802560.

The previous prime is 9904019. The next prime is 9904079. The reversal of 9904042 is 2404099.

It can be written as a sum of positive squares in 4 ways, for example, as 4004001 + 5900041 = 2001^2 + 2429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9904042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21834 + ... + 22282.

Almost surely, 2^9904042 is an apocalyptic number.

9904042 is a deficient number, since it is larger than the sum of its proper divisors (5404958).

9904042 is a wasteful number, since it uses less digits than its factorization.

9904042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 9904042 is about 3147.0687949265. The cubic root of 9904042 is about 214.7521354857.

The spelling of 9904042 in words is "nine million, nine hundred four thousand, forty-two".