129171346 has 8 divisors (see below), whose sum is σ = 194264064. Its totient is φ = 64416660.

The previous prime is 129171313. The next prime is 129171349. The reversal of 129171346 is 643171921.

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

It is not an unprimeable number, because it can be changed into a prime (129171349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83550 + ... + 85081.

It is an arithmetic number, because the mean of its divisors is an integer number (24283008).

Almost surely, 2^129171346 is an apocalyptic number.

129171346 is a deficient number, since it is larger than the sum of its proper divisors (65092718).

129171346 is a wasteful number, since it uses less digits than its factorization.

129171346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169016.

The product of its digits is 9072, while the sum is 34.

The square root of 129171346 is about 11365.3572755105. The cubic root of 129171346 is about 505.5010496126.

The spelling of 129171346 in words is "one hundred twenty-nine million, one hundred seventy-one thousand, three hundred forty-six".