42447875 has 8 divisors (see below), whose sum is σ = 52975104. Its totient is φ = 33958200.

The previous prime is 42447869. The next prime is 42447877. The reversal of 42447875 is 57874424.

It is a happy number.

It is not a de Polignac number, because 42447875 - 2¹⁰ = 42446851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42447877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169667 + ... + 169916.

It is an arithmetic number, because the mean of its divisors is an integer number (6621888).

Almost surely, 2^42447875 is an apocalyptic number.

42447875 is a deficient number, since it is larger than the sum of its proper divisors (10527229).

42447875 is an equidigital number, since it uses as much as digits as its factorization.

42447875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339598 (or 339588 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 42447875 is about 6515.2033736484. The cubic root of 42447875 is about 348.8338741326.

The spelling of 42447875 in words is "forty-two million, four hundred forty-seven thousand, eight hundred seventy-five".