42879907 has 4 divisors (see below), whose sum is σ = 49005616. Its totient is φ = 36754200.

The previous prime is 42879871. The next prime is 42879911. The reversal of 42879907 is 70997824.

42879907 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 not a de Polignac number, because 42879907 - 2⁷ = 42879779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42879937) 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, 3062844 + ... + 3062857.

It is an arithmetic number, because the mean of its divisors is an integer number (12251404).

Almost surely, 2^42879907 is an apocalyptic number.

42879907 is a deficient number, since it is larger than the sum of its proper divisors (6125709).

42879907 is an equidigital number, since it uses as much as digits as its factorization.

42879907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6125708.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 42879907 is about 6548.2751163952. The cubic root of 42879907 is about 350.0133518716.

The spelling of 42879907 in words is "forty-two million, eight hundred seventy-nine thousand, nine hundred seven".