42445145 has 16 divisors (see below), whose sum is σ = 54120000. Its totient is φ = 31866048.

The previous prime is 42445093. The next prime is 42445153. The reversal of 42445145 is 54154424.

42445145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42445145 - 2⁸ = 42444889 is a prime.

It is a Curzon 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 in 15 ways as a sum of consecutive naturals, for example, 8306 + ... + 12404.

It is an arithmetic number, because the mean of its divisors is an integer number (3382500).

Almost surely, 2^42445145 is an apocalyptic number.

It is an amenable number.

42445145 is a deficient number, since it is larger than the sum of its proper divisors (11674855).

42445145 is a wasteful number, since it uses less digits than its factorization.

42445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232.

The product of its digits is 12800, while the sum is 29.

The square root of 42445145 is about 6514.9938603194. The cubic root of 42445145 is about 348.8263956515.

Adding to 42445145 its reverse (54154424), we get a palindrome (96599569).

The spelling of 42445145 in words is "forty-two million, four hundred forty-five thousand, one hundred forty-five".