42445305 has 48 divisors (see below), whose sum is σ = 84824064. Its totient is φ = 19232640.

The previous prime is 42445303. The next prime is 42445313. The reversal of 42445305 is 50354424.

It is not a de Polignac number, because 42445305 - 2¹ = 42445303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42445301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39475 + ... + 40535.

It is an arithmetic number, because the mean of its divisors is an integer number (1767168).

Almost surely, 2^42445305 is an apocalyptic number.

42445305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42445305 is a deficient number, since it is larger than the sum of its proper divisors (42378759).

42445305 is a wasteful number, since it uses less digits than its factorization.

42445305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 42445305 is about 6515.0061396748. The cubic root of 42445305 is about 348.8268339596.

Adding to 42445305 its reverse (50354424), we get a palindrome (92799729).

The spelling of 42445305 in words is "forty-two million, four hundred forty-five thousand, three hundred five".