129373 has 4 divisors (see below), whose sum is σ = 131868. Its totient is φ = 126880.

The previous prime is 129361. The next prime is 129379. The reversal of 129373 is 373921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 373921 = 199 ⋅1879.

It can be written as a sum of positive squares in 2 ways, for example, as 49284 + 80089 = 222^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 129373 - 2⁵ = 129341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (32967).

2¹²⁹³⁷³ is an apocalyptic number.

It is an amenable number.

129373 is a deficient number, since it is larger than the sum of its proper divisors (2495).

129373 is an equidigital number, since it uses as much as digits as its factorization.

129373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494.

The product of its digits is 1134, while the sum is 25.

The square root of 129373 is about 359.6845840455. The cubic root of 129373 is about 50.5763964757.

The spelling of 129373 in words is "one hundred twenty-nine thousand, three hundred seventy-three".