42325809 has 4 divisors (see below), whose sum is σ = 56434416. Its totient is φ = 28217204.

The previous prime is 42325799. The next prime is 42325831. The reversal of 42325809 is 90852324.

It is a happy number.

42325809 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 42325809 - 2²³ = 33937201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42325809.

It is not an unprimeable number, because it can be changed into a prime (42325849) 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, 7054299 + ... + 7054304.

It is an arithmetic number, because the mean of its divisors is an integer number (14108604).

Almost surely, 2^42325809 is an apocalyptic number.

It is an amenable number.

42325809 is a deficient number, since it is larger than the sum of its proper divisors (14108607).

42325809 is a wasteful number, since it uses less digits than its factorization.

42325809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14108606.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 42325809 is about 6505.8288480408. The cubic root of 42325809 is about 348.4991762861.

It can be divided in two parts, 42325 and 809, that added together give a palindrome (43134).

The spelling of 42325809 in words is "forty-two million, three hundred twenty-five thousand, eight hundred nine".