858470842 has 8 divisors (see below), whose sum is σ = 1287856800. Its totient is φ = 429185244.

The previous prime is 858470803. The next prime is 858470857. The reversal of 858470842 is 248074858.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 858470792 and 858470801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259 + ... + 41497.

It is an arithmetic number, because the mean of its divisors is an integer number (160982100).

Almost surely, 2^858470842 is an apocalyptic number.

858470842 is a deficient number, since it is larger than the sum of its proper divisors (429385958).

858470842 is a wasteful number, since it uses less digits than its factorization.

858470842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50180.

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 858470842 is about 29299.6730698484. The cubic root of 858470842 is about 950.4045708044.

The spelling of 858470842 in words is "eight hundred fifty-eight million, four hundred seventy thousand, eight hundred forty-two".