42878922 has 16 divisors (see below), whose sum is σ = 86335200. Its totient is φ = 14196752.

The previous prime is 42878911. The next prime is 42878929. The reversal of 42878922 is 22987824.

42878922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42878929) 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, 23088 + ... + 24875.

It is an arithmetic number, because the mean of its divisors is an integer number (5395950).

Almost surely, 2^42878922 is an apocalyptic number.

42878922 is an abundant number, since it is smaller than the sum of its proper divisors (43456278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42878922 is a wasteful number, since it uses less digits than its factorization.

42878922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48117.

The product of its digits is 129024, while the sum is 42.

The square root of 42878922 is about 6548.1999053175. The cubic root of 42878922 is about 350.0106717834.

The spelling of 42878922 in words is "forty-two million, eight hundred seventy-eight thousand, nine hundred twenty-two".