129575443 has 16 divisors (see below), whose sum is σ = 138375936. Its totient is φ = 121115520.

The previous prime is 129575437. The next prime is 129575471. The reversal of 129575443 is 344575921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 129575443 - 2²⁵ = 96021011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129575396 and 129575405.

It is not an unprimeable number, because it can be changed into a prime (129575423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198105 + ... + 198757.

It is an arithmetic number, because the mean of its divisors is an integer number (8648496).

Almost surely, 2^129575443 is an apocalyptic number.

129575443 is a deficient number, since it is larger than the sum of its proper divisors (8800493).

129575443 is a wasteful number, since it uses less digits than its factorization.

129575443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894.

The product of its digits is 151200, while the sum is 40.

The square root of 129575443 is about 11383.1209692246. The cubic root of 129575443 is about 506.0276339275.

The spelling of 129575443 in words is "one hundred twenty-nine million, five hundred seventy-five thousand, four hundred forty-three".