129544 has 8 divisors (see below), whose sum is σ = 242910. Its totient is φ = 64768.

The previous prime is 129539. The next prime is 129553. The reversal of 129544 is 445921.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 56644 = 270^2 + 238^2 .

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

It is an unprimeable number.

129544 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, 8089 + ... + 8104.

2¹²⁹⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

129544 is a deficient number, since it is larger than the sum of its proper divisors (113366).

129544 is a wasteful number, since it uses less digits than its factorization.

129544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16199 (or 16195 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 129544 is about 359.9222138185. The cubic root of 129544 is about 50.5986699437.

The spelling of 129544 in words is "one hundred twenty-nine thousand, five hundred forty-four".