129044 has 6 divisors (see below), whose sum is σ = 225834. Its totient is φ = 64520.

The previous prime is 129037. The next prime is 129049. The reversal of 129044 is 440921.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 44944 = 290^2 + 212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129049) by changing a digit.

129044 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, 16127 + ... + 16134.

It is an arithmetic number, because the mean of its divisors is an integer number (37639).

2¹²⁹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

129044 is a deficient number, since it is larger than the sum of its proper divisors (96790).

129044 is a wasteful number, since it uses less digits than its factorization.

129044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32265 (or 32263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 129044 is about 359.2269477642. The cubic root of 129044 is about 50.5334875754.

Adding to 129044 its reverse (440921), we get a palindrome (569965).

The spelling of 129044 in words is "one hundred twenty-nine thousand, forty-four".