9009091042 has 16 divisors (see below), whose sum is σ = 15448663872. Its totient is φ = 3859912080.

The previous prime is 9009091001. The next prime is 9009091057. The reversal of 9009091042 is 2401909009.

It is a super-4 number, since 4×9009091042⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9009090989 and 9009091007.

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, 43293 + ... + 141040.

It is an arithmetic number, because the mean of its divisors is an integer number (965541492).

Almost surely, 2^9009091042 is an apocalyptic number.

9009091042 is a deficient number, since it is larger than the sum of its proper divisors (6439572830).

9009091042 is a wasteful number, since it uses less digits than its factorization.

9009091042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187833.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 9009091042 is about 94916.2317098609. The cubic root of 9009091042 is about 2080.7839625271.

The spelling of 9009091042 in words is "nine billion, nine million, ninety-one thousand, forty-two".