129273934 has 8 divisors (see below), whose sum is σ = 194301000. Its totient is φ = 64506936.

The previous prime is 129273931. The next prime is 129273971. The reversal of 129273934 is 439372921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129273931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63769 + ... + 65764.

It is an arithmetic number, because the mean of its divisors is an integer number (24287625).

Almost surely, 2^129273934 is an apocalyptic number.

129273934 is a deficient number, since it is larger than the sum of its proper divisors (65027066).

129273934 is a wasteful number, since it uses less digits than its factorization.

129273934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130034.

The product of its digits is 81648, while the sum is 40.

The square root of 129273934 is about 11369.8695682932. The cubic root of 129273934 is about 505.6348373313.

It can be divided in two parts, 12927 and 3934, that added together give a palindrome (16861).

The spelling of 129273934 in words is "one hundred twenty-nine million, two hundred seventy-three thousand, nine hundred thirty-four".