42878571 has 8 divisors (see below), whose sum is σ = 57288000. Its totient is φ = 28527432.

The previous prime is 42878543. The next prime is 42878587. The reversal of 42878571 is 17587824.

42878571 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 42878571 - 2¹⁴ = 42862187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42878531) 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, 12825 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (7161000).

Almost surely, 2^42878571 is an apocalyptic number.

42878571 is a deficient number, since it is larger than the sum of its proper divisors (14409429).

42878571 is a wasteful number, since it uses less digits than its factorization.

42878571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29145.

The product of its digits is 125440, while the sum is 42.

The square root of 42878571 is about 6548.1731040039. The cubic root of 42878571 is about 350.0097167370.

The spelling of 42878571 in words is "forty-two million, eight hundred seventy-eight thousand, five hundred seventy-one".