42857678 has 8 divisors (see below), whose sum is σ = 64350840. Its totient is φ = 21407400.

The previous prime is 42857657. The next prime is 42857681. The reversal of 42857678 is 87675824.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8093 + ... + 12296.

It is an arithmetic number, because the mean of its divisors is an integer number (8043855).

Almost surely, 2^42857678 is an apocalyptic number.

42857678 is a deficient number, since it is larger than the sum of its proper divisors (21493162).

42857678 is a wasteful number, since it uses less digits than its factorization.

42857678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442.

The product of its digits is 752640, while the sum is 47.

The square root of 42857678 is about 6546.5775791630. The cubic root of 42857678 is about 349.9528589570.

The spelling of 42857678 in words is "forty-two million, eight hundred fifty-seven thousand, six hundred seventy-eight".