129697434 has 24 divisors (see below), whose sum is σ = 281229312. Its totient is φ = 43198920.

The previous prime is 129697427. The next prime is 129697453. The reversal of 129697434 is 434796921.

It is a happy number.

129697434 is a `hidden beast` number, since 129 + 6 + 97 + 434 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 129697434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34407 + ... + 37989.

It is an arithmetic number, because the mean of its divisors is an integer number (11717888).

Almost surely, 2^129697434 is an apocalyptic number.

129697434 is an abundant number, since it is smaller than the sum of its proper divisors (151531878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129697434 is a wasteful number, since it uses less digits than its factorization.

129697434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602 (or 5599 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 129697434 is about 11388.4781248418. The cubic root of 129697434 is about 506.1863868858.

The spelling of 129697434 in words is "one hundred twenty-nine million, six hundred ninety-seven thousand, four hundred thirty-four".