42589009 has 4 divisors (see below), whose sum is σ = 43962880. Its totient is φ = 41215140.

The previous prime is 42588983. The next prime is 42589039. The reversal of 42589009 is 90098524.

42589009 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.

It is a cyclic number.

It is not a de Polignac number, because 42589009 - 2⁵ = 42588977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42589039) 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, 686889 + ... + 686950.

It is an arithmetic number, because the mean of its divisors is an integer number (10990720).

Almost surely, 2^42589009 is an apocalyptic number.

It is an amenable number.

42589009 is a deficient number, since it is larger than the sum of its proper divisors (1373871).

42589009 is a wasteful number, since it uses less digits than its factorization.

42589009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373870.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 42589009 is about 6526.0255132814. The cubic root of 42589009 is about 349.2200564542.

The spelling of 42589009 in words is "forty-two million, five hundred eighty-nine thousand, nine".