129345 has 8 divisors (see below), whose sum is σ = 206976. Its totient is φ = 68976.

The previous prime is 129341. The next prime is 129347. The reversal of 129345 is 543921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129345 - 2² = 129341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129341) 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, 4297 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (25872).

2¹²⁹³⁴⁵ is an apocalyptic number.

129345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129345 is a deficient number, since it is larger than the sum of its proper divisors (77631).

129345 is an equidigital number, since it uses as much as digits as its factorization.

129345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8631.

The product of its digits is 1080, while the sum is 24.

The square root of 129345 is about 359.6456589478. The cubic root of 129345 is about 50.5727474884.

It can be divided in two parts, 1293 and 45, that multiplied together give a palindrome (58185).

The spelling of 129345 in words is "one hundred twenty-nine thousand, three hundred forty-five".