42944387 has 8 divisors (see below), whose sum is σ = 43759632. Its totient is φ = 42134400.

The previous prime is 42944371. The next prime is 42944413. The reversal of 42944387 is 78344924.

42944387 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 a cyclic number.

It is not a de Polignac number, because 42944387 - 2⁴ = 42944371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42944327) 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, 17687 + ... + 19967.

It is an arithmetic number, because the mean of its divisors is an integer number (5469954).

Almost surely, 2^42944387 is an apocalyptic number.

42944387 is a deficient number, since it is larger than the sum of its proper divisors (815245).

42944387 is a wasteful number, since it uses less digits than its factorization.

42944387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629.

The product of its digits is 193536, while the sum is 41.

The square root of 42944387 is about 6553.1967008476. The cubic root of 42944387 is about 350.1887064018.

The spelling of 42944387 in words is "forty-two million, nine hundred forty-four thousand, three hundred eighty-seven".