42910879 has 4 divisors (see below), whose sum is σ = 46811880. Its totient is φ = 39009880.

The previous prime is 42910871. The next prime is 42910919. The reversal of 42910879 is 97801924.

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 42910879 - 2³ = 42910871 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42910871) 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, 1950484 + ... + 1950505.

It is an arithmetic number, because the mean of its divisors is an integer number (11702970).

Almost surely, 2^42910879 is an apocalyptic number.

42910879 is a deficient number, since it is larger than the sum of its proper divisors (3901001).

42910879 is a wasteful number, since it uses less digits than its factorization.

42910879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901000.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 42910879 is about 6550.6395870938. The cubic root of 42910879 is about 350.0976027115.

The spelling of 42910879 in words is "forty-two million, nine hundred ten thousand, eight hundred seventy-nine".