858072442 has 8 divisors (see below), whose sum is σ = 1287280800. Its totient is φ = 428978844.

The previous prime is 858072409. The next prime is 858072443. The reversal of 858072442 is 244270858.

858072442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 858072395 and 858072404.

It is not an unprimeable number, because it can be changed into a prime (858072443) 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, 6592 + ... + 41947.

It is an arithmetic number, because the mean of its divisors is an integer number (160910100).

Almost surely, 2^858072442 is an apocalyptic number.

858072442 is a deficient number, since it is larger than the sum of its proper divisors (429208358).

858072442 is a wasteful number, since it uses less digits than its factorization.

858072442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57380.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 858072442 is about 29292.8735702048. The cubic root of 858072442 is about 950.2575264898.

The spelling of 858072442 in words is "eight hundred fifty-eight million, seventy-two thousand, four hundred forty-two".