129832 has 8 divisors (see below), whose sum is σ = 243450. Its totient is φ = 64912.

The previous prime is 129803. The next prime is 129841. The reversal of 129832 is 238921.

It can be written as a sum of positive squares in only one way, i.e., 75076 + 54756 = 274^2 + 234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a junction number, because it is equal to n+sod(n) for n = 129797 and 129806.

It is an unprimeable number.

129832 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8107 + ... + 8122.

2¹²⁹⁸³² is an apocalyptic number.

It is an amenable number.

129832 is a deficient number, since it is larger than the sum of its proper divisors (113618).

129832 is a wasteful number, since it uses less digits than its factorization.

129832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16235 (or 16231 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 129832 is about 360.3220781468. The cubic root of 129832 is about 50.6361388892.

It can be divided in two parts, 129 and 832, that added together give a square (961 = 31²).

The spelling of 129832 in words is "one hundred twenty-nine thousand, eight hundred thirty-two".