42791093 has 4 divisors (see below), whose sum is σ = 42804288. Its totient is φ = 42777900.

The previous prime is 42791083. The next prime is 42791101. The reversal of 42791093 is 39019724.

42791093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42791093 - 2⁸ = 42790837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42791083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (10701072).

Almost surely, 2^42791093 is an apocalyptic number.

It is an amenable number.

42791093 is a deficient number, since it is larger than the sum of its proper divisors (13195).

42791093 is an equidigital number, since it uses as much as digits as its factorization.

42791093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 42791093 is about 6541.4901207599. The cubic root of 42791093 is about 349.7715325297.

The spelling of 42791093 in words is "forty-two million, seven hundred ninety-one thousand, ninety-three".