129780193 has 8 divisors (see below), whose sum is σ = 138700512. Its totient is φ = 121002816.

The previous prime is 129780181. The next prime is 129780197. The reversal of 129780193 is 391087921.

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 129780193 - 2⁹ = 129779681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129780197) 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, 33855 + ... + 37492.

It is an arithmetic number, because the mean of its divisors is an integer number (17337564).

Almost surely, 2^129780193 is an apocalyptic number.

It is an amenable number.

129780193 is a deficient number, since it is larger than the sum of its proper divisors (8920319).

129780193 is a wasteful number, since it uses less digits than its factorization.

129780193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71471.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 129780193 is about 11392.1109984059. The cubic root of 129780193 is about 506.2940286251.

The spelling of 129780193 in words is "one hundred twenty-nine million, seven hundred eighty thousand, one hundred ninety-three".