242587911871 has 4 divisors (see below), whose sum is σ = 242590798872. Its totient is φ = 242585024872.

The previous prime is 242587911869. The next prime is 242587911877. The reversal of 242587911871 is 178119785242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242587911871 - 2¹ = 242587911869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242587911877) 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, 1313560 + ... + 1486813.

It is an arithmetic number, because the mean of its divisors is an integer number (60647699718).

Almost surely, 2^242587911871 is an apocalyptic number.

242587911871 is a deficient number, since it is larger than the sum of its proper divisors (2887001).

242587911871 is an equidigital number, since it uses as much as digits as its factorization.

242587911871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887000.

The product of its digits is 2257920, while the sum is 55.

The spelling of 242587911871 in words is "two hundred forty-two billion, five hundred eighty-seven million, nine hundred eleven thousand, eight hundred seventy-one".