858142 has 8 divisors (see below), whose sum is σ = 1328832. Its totient is φ = 415200.

The previous prime is 858127. The next prime is 858149. The reversal of 858142 is 241858.

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

It is a self number, because there is not a number n which added to its sum of digits gives 858142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858149) by changing a digit.

858142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6859 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (166104).

2⁸⁵⁸¹⁴² is an apocalyptic number.

858142 is a deficient number, since it is larger than the sum of its proper divisors (470690).

858142 is a wasteful number, since it uses less digits than its factorization.

858142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13874.

The product of its digits is 2560, while the sum is 28.

The square root of 858142 is about 926.3595414309. The cubic root of 858142 is about 95.0283202732.

It can be divided in two parts, 858 and 142, that added together give a cube (1000 = 10³).

The spelling of 858142 in words is "eight hundred fifty-eight thousand, one hundred forty-two".