9909042 has 32 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 2771520.

The previous prime is 9909019. The next prime is 9909047. The reversal of 9909042 is 2409099.

It is a happy number.

9909042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9909042² = 196378226715528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 9908994 and 9909012.

It is not an unprimeable number, because it can be changed into a prime (9909047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4917 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (727650).

Almost surely, 2^9909042 is an apocalyptic number.

9909042 is an abundant number, since it is smaller than the sum of its proper divisors (13375758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9909042 is a wasteful number, since it uses less digits than its factorization.

9909042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 9909042 is about 3147.8630846973. The cubic root of 9909042 is about 214.7882682092.

The spelling of 9909042 in words is "nine million, nine hundred nine thousand, forty-two".