129868 has 6 divisors (see below), whose sum is σ = 227276. Its totient is φ = 64932.

The previous prime is 129853. The next prime is 129887. The reversal of 129868 is 868921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16230 + ... + 16237.

2¹²⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

129868 is a deficient number, since it is larger than the sum of its proper divisors (97408).

129868 is a wasteful number, since it uses less digits than its factorization.

129868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32471 (or 32469 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 129868 is about 360.3720299912. The cubic root of 129868 is about 50.6408186100.

The spelling of 129868 in words is "one hundred twenty-nine thousand, eight hundred sixty-eight".