129881307 has 8 divisors (see below), whose sum is σ = 174176784. Its totient is φ = 86086688.

The previous prime is 129881303. The next prime is 129881327. The reversal of 129881307 is 703188921.

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

It is a cyclic number.

It is not a de Polignac number, because 129881307 - 2² = 129881303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129881303) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 124608 + ... + 125645.

It is an arithmetic number, because the mean of its divisors is an integer number (21772098).

Almost surely, 2^129881307 is an apocalyptic number.

129881307 is a deficient number, since it is larger than the sum of its proper divisors (44295477).

129881307 is a wasteful number, since it uses less digits than its factorization.

129881307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250429.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 129881307 is about 11396.5480299957. The cubic root of 129881307 is about 506.4254819791.

The spelling of 129881307 in words is "one hundred twenty-nine million, eight hundred eighty-one thousand, three hundred seven".