129730611 has 4 divisors (see below), whose sum is σ = 172974152. Its totient is φ = 86487072.

The previous prime is 129730609. The next prime is 129730721. The reversal of 129730611 is 116037921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 129730611 - 2¹ = 129730609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129731611) 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, 21621766 + ... + 21621771.

It is an arithmetic number, because the mean of its divisors is an integer number (43243538).

Almost surely, 2^129730611 is an apocalyptic number.

129730611 is a deficient number, since it is larger than the sum of its proper divisors (43243541).

129730611 is an equidigital number, since it uses as much as digits as its factorization.

129730611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43243540.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 129730611 is about 11389.9346354577. The cubic root of 129730611 is about 506.2295445477.

The spelling of 129730611 in words is "one hundred twenty-nine million, seven hundred thirty thousand, six hundred eleven".