858125142 has 72 divisors (see below), whose sum is σ = 2168901072. Its totient is φ = 244490400.

The previous prime is 858125141. The next prime is 858125143. The reversal of 858125142 is 241521858.

It is an interprime number because it is at equal distance from previous prime (858125141) and next prime (858125143).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 858125097 and 858125106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858125141) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 370167 + ... + 372477.

It is an arithmetic number, because the mean of its divisors is an integer number (30123626).

Almost surely, 2^858125142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858125142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1084450536).

858125142 is an abundant number, since it is smaller than the sum of its proper divisors (1310775930).

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

858125142 is a wasteful number, since it uses less digits than its factorization.

858125142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754 (or 2744 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 858125142 is about 29293.7730925874. The cubic root of 858125142 is about 950.2769799936.

The spelling of 858125142 in words is "eight hundred fifty-eight million, one hundred twenty-five thousand, one hundred forty-two".