129998035 has 16 divisors (see below), whose sum is σ = 163249920. Its totient is φ = 99256320.

The previous prime is 129998027. The next prime is 129998059. The reversal of 129998035 is 530899921.

It is not a de Polignac number, because 129998035 - 2³ = 129998027 is a prime.

It is a super-2 number, since 2×129998035² = 33798978207722450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5571 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (10203120).

Almost surely, 2^129998035 is an apocalyptic number.

129998035 is a deficient number, since it is larger than the sum of its proper divisors (33251885).

129998035 is a wasteful number, since it uses less digits than its factorization.

129998035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11598.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 129998035 is about 11401.6680797154. The cubic root of 129998035 is about 506.5771495149.

The spelling of 129998035 in words is "one hundred twenty-nine million, nine hundred ninety-eight thousand, thirty-five".