129380111 has 8 divisors (see below), whose sum is σ = 148187424. Its totient is φ = 110653920.

The previous prime is 129380093. The next prime is 129380137. The reversal of 129380111 is 111083921.

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 129380111 - 2¹⁰ = 129379087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129380161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16820 + ... + 23273.

It is an arithmetic number, because the mean of its divisors is an integer number (18523428).

Almost surely, 2^129380111 is an apocalyptic number.

129380111 is a deficient number, since it is larger than the sum of its proper divisors (18807313).

129380111 is an equidigital number, since it uses as much as digits as its factorization.

129380111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40561.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 129380111 is about 11374.5378367651. The cubic root of 129380111 is about 505.7732310428.

The spelling of 129380111 in words is "one hundred twenty-nine million, three hundred eighty thousand, one hundred eleven".