868142881 has 4 divisors (see below), whose sum is σ = 868853952. Its totient is φ = 867431812.

The previous prime is 868142827. The next prime is 868142903. The reversal of 868142881 is 188241868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 868142881 - 2¹⁹ = 867618593 is a prime.

It is a super-2 number, since 2×868142881² = 1507344123661960322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868145881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353701 + ... + 356146.

It is an arithmetic number, because the mean of its divisors is an integer number (217213488).

Almost surely, 2^868142881 is an apocalyptic number.

It is an amenable number.

868142881 is a deficient number, since it is larger than the sum of its proper divisors (711071).

868142881 is a wasteful number, since it uses less digits than its factorization.

868142881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711070.

The product of its digits is 196608, while the sum is 46.

The square root of 868142881 is about 29464.2644741049. The cubic root of 868142881 is about 953.9605224461.

The spelling of 868142881 in words is "eight hundred sixty-eight million, one hundred forty-two thousand, eight hundred eighty-one".