129908 has 12 divisors (see below), whose sum is σ = 232512. Its totient is φ = 63480.

The previous prime is 129901. The next prime is 129917. The reversal of 129908 is 809921.

129908 is nontrivially palindromic in base 3.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129901) 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, 158 + ... + 533.

It is an arithmetic number, because the mean of its divisors is an integer number (19376).

2¹²⁹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

129908 is a deficient number, since it is larger than the sum of its proper divisors (102604).

129908 is a wasteful number, since it uses less digits than its factorization.

129908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 129908 is about 360.4275239212. The cubic root of 129908 is about 50.6460172856.

The spelling of 129908 in words is "one hundred twenty-nine thousand, nine hundred eight".