42447443 has 4 divisors (see below), whose sum is σ = 44293008. Its totient is φ = 40601880.

The previous prime is 42447413. The next prime is 42447451. The reversal of 42447443 is 34474424.

42447443 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 cyclic number.

It is not a de Polignac number, because 42447443 - 2⁸ = 42447187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42447413) 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 3 ways as a sum of consecutive naturals, for example, 922748 + ... + 922793.

It is an arithmetic number, because the mean of its divisors is an integer number (11073252).

Almost surely, 2^42447443 is an apocalyptic number.

42447443 is a deficient number, since it is larger than the sum of its proper divisors (1845565).

42447443 is a wasteful number, since it uses less digits than its factorization.

42447443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845564.

The product of its digits is 43008, while the sum is 32.

The square root of 42447443 is about 6515.1702203396. The cubic root of 42447443 is about 348.8326907460.

The spelling of 42447443 in words is "forty-two million, four hundred forty-seven thousand, four hundred forty-three".