42448521 has 8 divisors (see below), whose sum is σ = 56761600. Its totient is φ = 28217232.

The previous prime is 42448493. The next prime is 42448531. The reversal of 42448521 is 12584424.

42448521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42448521 - 2⁶ = 42448457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42448531) 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 7 ways as a sum of consecutive naturals, for example, 19225 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (7095200).

Almost surely, 2^42448521 is an apocalyptic number.

It is an amenable number.

42448521 is a deficient number, since it is larger than the sum of its proper divisors (14313079).

42448521 is a wasteful number, since it uses less digits than its factorization.

42448521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40895.

The product of its digits is 10240, while the sum is 30.

The square root of 42448521 is about 6515.2529498094. The cubic root of 42448521 is about 348.8356437190.

The spelling of 42448521 in words is "forty-two million, four hundred forty-eight thousand, five hundred twenty-one".