129412 has 6 divisors (see below), whose sum is σ = 226478. Its totient is φ = 64704.

The previous prime is 129403. The next prime is 129419. The reversal of 129412 is 214921.

It can be written as a sum of positive squares in only one way, i.e., 125316 + 4096 = 354^2 + 64^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 129412.

It is not an unprimeable number, because it can be changed into a prime (129419) by changing a digit.

129412 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, 16173 + ... + 16180.

2¹²⁹⁴¹² is an apocalyptic number.

It is an amenable number.

129412 is a deficient number, since it is larger than the sum of its proper divisors (97066).

129412 is a wasteful number, since it uses less digits than its factorization.

129412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32357 (or 32355 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 129412 is about 359.7387941271. The cubic root of 129412 is about 50.5814781163.

The spelling of 129412 in words is "one hundred twenty-nine thousand, four hundred twelve".