129892 has 12 divisors (see below), whose sum is σ = 259840. Its totient is φ = 55656.

The previous prime is 129887. The next prime is 129893. The reversal of 129892 is 298921.

129892 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (129893) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2292 + ... + 2347.

2¹²⁹⁸⁹² is an apocalyptic number.

It is an amenable number.

129892 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129892 is a wasteful number, since it uses less digits than its factorization.

129892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650 (or 4648 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 129892 is about 360.4053273746. The cubic root of 129892 is about 50.6439379435.

The spelling of 129892 in words is "one hundred twenty-nine thousand, eight hundred ninety-two".