842987228279 has 4 divisors (see below), whose sum is σ = 963413975184. Its totient is φ = 722560481376.

The previous prime is 842987228273. The next prime is 842987228333. The reversal of 842987228279 is 972822789248.

842987228279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842987228279 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 (842987228273) 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, 60213373442 + ... + 60213373455.

It is an arithmetic number, because the mean of its divisors is an integer number (240853493796).

Almost surely, 2^842987228279 is an apocalyptic number.

842987228279 is a deficient number, since it is larger than the sum of its proper divisors (120426746905).

842987228279 is a wasteful number, since it uses less digits than its factorization.

842987228279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120426746904.

The product of its digits is 130056192, while the sum is 68.

The spelling of 842987228279 in words is "eight hundred forty-two billion, nine hundred eighty-seven million, two hundred twenty-eight thousand, two hundred seventy-nine".