42698879 has 8 divisors (see below), whose sum is σ = 44620800. Its totient is φ = 40782456.

The previous prime is 42698869. The next prime is 42698893. The reversal of 42698879 is 97889624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42698879 - 2⁴ = 42698863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42698879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42698869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29822 + ... + 31220.

It is an arithmetic number, because the mean of its divisors is an integer number (5577600).

Almost surely, 2^42698879 is an apocalyptic number.

42698879 is a deficient number, since it is larger than the sum of its proper divisors (1921921).

42698879 is a wasteful number, since it uses less digits than its factorization.

42698879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its digits is 1741824, while the sum is 53.

The square root of 42698879 is about 6534.4379253307. The cubic root of 42698879 is about 349.5201014770.

The spelling of 42698879 in words is "forty-two million, six hundred ninety-eight thousand, eight hundred seventy-nine".