871025243 has 32 divisors (see below), whose sum is σ = 1037836800. Its totient is φ = 722050560.

The previous prime is 871025191. The next prime is 871025263. The reversal of 871025243 is 342520178.

It is a de Polignac number, because none of the positive numbers 2^k-871025243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (871025263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197746 + ... + 1198472.

It is an arithmetic number, because the mean of its divisors is an integer number (32432400).

Almost surely, 2^871025243 is an apocalyptic number.

871025243 is a deficient number, since it is larger than the sum of its proper divisors (166811557).

871025243 is a wasteful number, since it uses less digits than its factorization.

871025243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 871025243 is about 29513.1367868615. The cubic root of 871025243 is about 955.0151192292.

The spelling of 871025243 in words is "eight hundred seventy-one million, twenty-five thousand, two hundred forty-three".