42909118 has 16 divisors (see below), whose sum is σ = 74947680. Its totient is φ = 18042336.

The previous prime is 42909089. The next prime is 42909121. The reversal of 42909118 is 81190924.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28173 + ... + 29656.

It is an arithmetic number, because the mean of its divisors is an integer number (4684230).

Almost surely, 2^42909118 is an apocalyptic number.

42909118 is a deficient number, since it is larger than the sum of its proper divisors (32038562).

42909118 is a wasteful number, since it uses less digits than its factorization.

42909118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57891.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 42909118 is about 6550.5051713589. The cubic root of 42909118 is about 350.0928134807.

The spelling of 42909118 in words is "forty-two million, nine hundred nine thousand, one hundred eighteen".