129004 has 6 divisors (see below), whose sum is σ = 225764. Its totient is φ = 64500.

The previous prime is 129001. The next prime is 129011. The reversal of 129004 is 400921.

It is not an unprimeable number, because it can be changed into a prime (129001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16122 + ... + 16129.

2¹²⁹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

129004 is a deficient number, since it is larger than the sum of its proper divisors (96760).

129004 is a wasteful number, since it uses less digits than its factorization.

129004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32255 (or 32253 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 129004 is about 359.1712683387. The cubic root of 129004 is about 50.5282657173.

Adding to 129004 its reverse (400921), we get a palindrome (529925).

The spelling of 129004 in words is "one hundred twenty-nine thousand, four".