871123138 has 8 divisors (see below), whose sum is σ = 1307040588. Its totient is φ = 435442944.

The previous prime is 871123117. The next prime is 871123151. The reversal of 871123138 is 831321178.

It can be written as a sum of positive squares in 2 ways, for example, as 645312409 + 225810729 = 25403^2 + 15027^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49831 + ... + 65002.

Almost surely, 2^871123138 is an apocalyptic number.

871123138 is a deficient number, since it is larger than the sum of its proper divisors (435917450).

871123138 is a wasteful number, since it uses less digits than its factorization.

871123138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118628.

The product of its digits is 8064, while the sum is 34.

The square root of 871123138 is about 29514.7952389984. The cubic root of 871123138 is about 955.0508961115.

The spelling of 871123138 in words is "eight hundred seventy-one million, one hundred twenty-three thousand, one hundred thirty-eight".