129036 has 12 divisors (see below), whose sum is σ = 301112. Its totient is φ = 43008.

The previous prime is 129023. The next prime is 129037. The reversal of 129036 is 630921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) 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 a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (129037) 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, 5365 + ... + 5388.

2¹²⁹⁰³⁶ is an apocalyptic number.

It is an amenable number.

129036 is an abundant number, since it is smaller than the sum of its proper divisors (172076).

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

129036 is a wasteful number, since it uses less digits than its factorization.

129036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760 (or 10758 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 129036 is about 359.2158125695. The cubic root of 129036 is about 50.5324432901.

Adding to 129036 its reverse (630921), we get a palindrome (759957).

It can be divided in two parts, 1290 and 36, that added together give a triangular number (1326 = T₅₁).

The spelling of 129036 in words is "one hundred twenty-nine thousand, thirty-six".