858805242 has 32 divisors (see below), whose sum is σ = 1734580224. Its totient is φ = 283449600.

The previous prime is 858805231. The next prime is 858805247. The reversal of 858805242 is 242508858.

It is a junction number, because it is equal to n+sod(n) for n = 858805194 and 858805203.

It is not an unprimeable number, because it can be changed into a prime (858805247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579142 + ... + 580622.

It is an arithmetic number, because the mean of its divisors is an integer number (54205632).

Almost surely, 2^858805242 is an apocalyptic number.

858805242 is an abundant number, since it is smaller than the sum of its proper divisors (875774982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858805242 is a wasteful number, since it uses less digits than its factorization.

858805242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374.

The product of its (nonzero) digits is 204800, while the sum is 42.

The square root of 858805242 is about 29305.3790625544. The cubic root of 858805242 is about 950.5279584279.

The spelling of 858805242 in words is "eight hundred fifty-eight million, eight hundred five thousand, two hundred forty-two".