129870235 has 16 divisors (see below), whose sum is σ = 171007200. Its totient is φ = 93898240.

The previous prime is 129870227. The next prime is 129870271. The reversal of 129870235 is 532078921.

It is not a de Polignac number, because 129870235 - 2³ = 129870227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129870194 and 129870203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2691 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (10687950).

Almost surely, 2^129870235 is an apocalyptic number.

129870235 is a deficient number, since it is larger than the sum of its proper divisors (41136965).

129870235 is a wasteful number, since it uses less digits than its factorization.

129870235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13838.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 129870235 is about 11396.0622585172. The cubic root of 129870235 is about 506.4110911418.

The spelling of 129870235 in words is "one hundred twenty-nine million, eight hundred seventy thousand, two hundred thirty-five".