129441326 has 32 divisors (see below), whose sum is σ = 230791680. Its totient is φ = 53272800.

The previous prime is 129441313. The next prime is 129441343. The reversal of 129441326 is 623144921.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129441292 and 129441301.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 84911 + ... + 86421.

It is an arithmetic number, because the mean of its divisors is an integer number (7212240).

Almost surely, 2^129441326 is an apocalyptic number.

129441326 is a deficient number, since it is larger than the sum of its proper divisors (101350354).

129441326 is a wasteful number, since it uses less digits than its factorization.

129441326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its digits is 10368, while the sum is 32.

The square root of 129441326 is about 11377.2283971097. The cubic root of 129441326 is about 505.8529857707.

The spelling of 129441326 in words is "one hundred twenty-nine million, four hundred forty-one thousand, three hundred twenty-six".