135842531329 has 6 divisors (see below), whose sum is σ = 144303312134. Its totient is φ = 127851793920.

The previous prime is 135842531303. The next prime is 135842531333. The reversal of 135842531329 is 923135248531.

It can be written as a sum of positive squares in 3 ways, for example, as 45346850704 + 90495680625 = 212948^2 + 300825^2 .

It is not a de Polignac number, because 135842531329 - 2¹⁷ = 135842400257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135842538329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235021392 + ... + 235021969.

Almost surely, 2^135842531329 is an apocalyptic number.

It is an amenable number.

135842531329 is a deficient number, since it is larger than the sum of its proper divisors (8460780805).

135842531329 is an equidigital number, since it uses as much as digits as its factorization.

135842531329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470043395 (or 470043378 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 135842531329 in words is "one hundred thirty-five billion, eight hundred forty-two million, five hundred thirty-one thousand, three hundred twenty-nine".