842349607129 has 4 divisors (see below), whose sum is σ = 862894719540. Its totient is φ = 821804494720.

The previous prime is 842349607117. The next prime is 842349607139. The reversal of 842349607129 is 921706943248.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34355363904 + 807994243225 = 185352^2 + 898885^2 .

It is a cyclic number.

It is not a de Polignac number, because 842349607129 - 2¹⁵ = 842349574361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842349607129.

It is not an unprimeable number, because it can be changed into a prime (842349607139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10272556144 + ... + 10272556225.

It is an arithmetic number, because the mean of its divisors is an integer number (215723679885).

Almost surely, 2^842349607129 is an apocalyptic number.

It is an amenable number.

842349607129 is a deficient number, since it is larger than the sum of its proper divisors (20545112411).

842349607129 is a wasteful number, since it uses less digits than its factorization.

842349607129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20545112410.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 842349607129 in words is "eight hundred forty-two billion, three hundred forty-nine million, six hundred seven thousand, one hundred twenty-nine".