129573 has 8 divisors (see below), whose sum is σ = 192000. Its totient is φ = 86364.

The previous prime is 129553. The next prime is 129581. The reversal of 129573 is 375921.

129573 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 129573 - 2⁶ = 129509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4799 = 129573 / (1 + 2 + 9 + 5 + 7 + 3).

129573 is strictly pandigital in base 7.

129573 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2373 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (24000).

2¹²⁹⁵⁷³ is an apocalyptic number.

It is an amenable number.

129573 is a deficient number, since it is larger than the sum of its proper divisors (62427).

129573 is an equidigital number, since it uses as much as digits as its factorization.

129573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4802 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 129573 is about 359.9624980467. The cubic root of 129573 is about 50.6024453713.

Adding to 129573 its sum of digits (27), we get a square (129600 = 360²).

The spelling of 129573 in words is "one hundred twenty-nine thousand, five hundred seventy-three".