129517345 has 8 divisors (see below), whose sum is σ = 155491776. Its totient is φ = 103566576.

The previous prime is 129517343. The next prime is 129517361. The reversal of 129517345 is 543715921.

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

It is a cyclic number.

It is not a de Polignac number, because 129517345 - 2¹ = 129517343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129517343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10054 + ... + 18976.

It is an arithmetic number, because the mean of its divisors is an integer number (19436472).

Almost surely, 2^129517345 is an apocalyptic number.

It is an amenable number.

129517345 is a deficient number, since it is larger than the sum of its proper divisors (25974431).

129517345 is an equidigital number, since it uses as much as digits as its factorization.

129517345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11831.

The product of its digits is 37800, while the sum is 37.

The square root of 129517345 is about 11380.5687467718. The cubic root of 129517345 is about 505.9519930812.

The spelling of 129517345 in words is "one hundred twenty-nine million, five hundred seventeen thousand, three hundred forty-five".