129111357 has 8 divisors (see below), whose sum is σ = 172241440. Its totient is φ = 86027760.

The previous prime is 129111349. The next prime is 129111361. The reversal of 129111357 is 753111921.

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

It is not a de Polignac number, because 129111357 - 2³ = 129111349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129111317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4519 + ... + 16692.

It is an arithmetic number, because the mean of its divisors is an integer number (21530180).

Almost surely, 2^129111357 is an apocalyptic number.

It is an amenable number.

129111357 is a deficient number, since it is larger than the sum of its proper divisors (43130083).

129111357 is a wasteful number, since it uses less digits than its factorization.

129111357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23243.

The product of its digits is 1890, while the sum is 30.

The square root of 129111357 is about 11362.7178526970. The cubic root of 129111357 is about 505.4227835498.

The spelling of 129111357 in words is "one hundred twenty-nine million, one hundred eleven thousand, three hundred fifty-seven".