851875142 has 4 divisors (see below), whose sum is σ = 1277812716. Its totient is φ = 425937570.

The previous prime is 851875121. The next prime is 851875169. The reversal of 851875142 is 241578158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241578158 = 2 ⋅120789079.

It is a self number, because there is not a number n which added to its sum of digits gives 851875142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212968784 + ... + 212968787.

It is an arithmetic number, because the mean of its divisors is an integer number (319453179).

Almost surely, 2^851875142 is an apocalyptic number.

851875142 is a deficient number, since it is larger than the sum of its proper divisors (425937574).

851875142 is a wasteful number, since it uses less digits than its factorization.

851875142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425937573.

The product of its digits is 89600, while the sum is 41.

The square root of 851875142 is about 29186.9001779908. The cubic root of 851875142 is about 947.9642991000.

The spelling of 851875142 in words is "eight hundred fifty-one million, eight hundred seventy-five thousand, one hundred forty-two".