842157264189 has 4 divisors (see below), whose sum is σ = 1122876352256. Its totient is φ = 561438176124.

The previous prime is 842157264187. The next prime is 842157264233. The reversal of 842157264189 is 981462751248.

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 not a de Polignac number, because 842157264189 - 2¹ = 842157264187 is a prime.

It is a super-2 number, since 2×842157264189² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842157264187) 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, 140359544029 + ... + 140359544034.

It is an arithmetic number, because the mean of its divisors is an integer number (280719088064).

Almost surely, 2^842157264189 is an apocalyptic number.

It is an amenable number.

842157264189 is a deficient number, since it is larger than the sum of its proper divisors (280719088067).

842157264189 is a wasteful number, since it uses less digits than its factorization.

842157264189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280719088066.

The product of its digits is 7741440, while the sum is 57.

The spelling of 842157264189 in words is "eight hundred forty-two billion, one hundred fifty-seven million, two hundred sixty-four thousand, one hundred eighty-nine".