129475 has 6 divisors (see below), whose sum is σ = 160580. Its totient is φ = 103560.

The previous prime is 129469. The next prime is 129491. The reversal of 129475 is 574921.

It is a happy number.

It is not a de Polignac number, because 129475 - 2⁵ = 129443 is a prime.

129475 is a lucky number.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2565 + ... + 2614.

2¹²⁹⁴⁷⁵ is an apocalyptic number.

129475 is a deficient number, since it is larger than the sum of its proper divisors (31105).

129475 is an equidigital number, since it uses as much as digits as its factorization.

129475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189 (or 5184 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 129475 is about 359.8263470064. The cubic root of 129475 is about 50.5896847642.

It can be divided in two parts, 1294 and 75, that added together give a square (1369 = 37²).

The spelling of 129475 in words is "one hundred twenty-nine thousand, four hundred seventy-five".