42875879 has 4 divisors (see below), whose sum is σ = 42981120. Its totient is φ = 42770640.

The previous prime is 42875869. The next prime is 42875881. The reversal of 42875879 is 97857824.

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 42875879 - 2¹⁶ = 42810343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42875809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52007 + ... + 52824.

It is an arithmetic number, because the mean of its divisors is an integer number (10745280).

Almost surely, 2^42875879 is an apocalyptic number.

42875879 is a deficient number, since it is larger than the sum of its proper divisors (105241).

42875879 is a wasteful number, since it uses less digits than its factorization.

42875879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105240.

The product of its digits is 1128960, while the sum is 50.

The square root of 42875879 is about 6547.9675472623. The cubic root of 42875879 is about 350.0023918204.

The spelling of 42875879 in words is "forty-two million, eight hundred seventy-five thousand, eight hundred seventy-nine".