129994142935 has 4 divisors (see below), whose sum is σ = 155992971528. Its totient is φ = 103995314344.

The previous prime is 129994142923. The next prime is 129994142951. The reversal of 129994142935 is 539241499921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 539241499921 = 257 ⋅2098215953.

It is a cyclic number.

It is not a de Polignac number, because 129994142935 - 2²⁵ = 129960588503 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 129994142935.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12999414289 + ... + 12999414298.

It is an arithmetic number, because the mean of its divisors is an integer number (38998242882).

Almost surely, 2^129994142935 is an apocalyptic number.

129994142935 is a deficient number, since it is larger than the sum of its proper divisors (25998828593).

129994142935 is an equidigital number, since it uses as much as digits as its factorization.

129994142935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25998828592.

The product of its digits is 6298560, while the sum is 58.

The spelling of 129994142935 in words is "one hundred twenty-nine billion, nine hundred ninety-four million, one hundred forty-two thousand, nine hundred thirty-five".