129376443 has 32 divisors (see below), whose sum is σ = 213857280. Its totient is φ = 67875840.

The previous prime is 129376441. The next prime is 129376459. The reversal of 129376443 is 344673921.

It is not a de Polignac number, because 129376443 - 2¹ = 129376441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129376441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10218 + ... + 19056.

It is an arithmetic number, because the mean of its divisors is an integer number (6683040).

Almost surely, 2^129376443 is an apocalyptic number.

129376443 is a deficient number, since it is larger than the sum of its proper divisors (84480837).

129376443 is a wasteful number, since it uses less digits than its factorization.

129376443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907.

The product of its digits is 108864, while the sum is 39.

The square root of 129376443 is about 11374.3765983020. The cubic root of 129376443 is about 505.7684513443.

The spelling of 129376443 in words is "one hundred twenty-nine million, three hundred seventy-six thousand, four hundred forty-three".