42445342 has 4 divisors (see below), whose sum is σ = 63668016. Its totient is φ = 21222670.

The previous prime is 42445321. The next prime is 42445369. The reversal of 42445342 is 24354424.

42445342 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.

It is a self number, because there is not a number n which added to its sum of digits gives 42445342.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10611334 + ... + 10611337.

It is an arithmetic number, because the mean of its divisors is an integer number (15917004).

Almost surely, 2^42445342 is an apocalyptic number.

42445342 is a deficient number, since it is larger than the sum of its proper divisors (21222674).

42445342 is a wasteful number, since it uses less digits than its factorization.

42445342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21222673.

The product of its digits is 15360, while the sum is 28.

The square root of 42445342 is about 6515.0089792724. The cubic root of 42445342 is about 348.8269353182.

Adding to 42445342 its reverse (24354424), we get a palindrome (66799766).

The spelling of 42445342 in words is "forty-two million, four hundred forty-five thousand, three hundred forty-two".