129842851457 has 6 divisors (see below), whose sum is σ = 142719828594. Its totient is φ = 118038955760.

The previous prime is 129842851433. The next prime is 129842851459. The reversal of 129842851457 is 754158248921.

It can be written as a sum of positive squares in only one way, i.e., 110437247041 + 19405604416 = 332321^2 + 139304^2 .

It is not a de Polignac number, because 129842851457 - 2⁶ = 129842851393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129842851459) 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, 536540588 + ... + 536540829.

It is an arithmetic number, because the mean of its divisors is an integer number (23786638099).

Almost surely, 2^129842851457 is an apocalyptic number.

It is an amenable number.

129842851457 is a deficient number, since it is larger than the sum of its proper divisors (12876977137).

129842851457 is a wasteful number, since it uses less digits than its factorization.

129842851457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073081439 (or 1073081428 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 56.

The spelling of 129842851457 in words is "one hundred twenty-nine billion, eight hundred forty-two million, eight hundred fifty-one thousand, four hundred fifty-seven".