129061443 has 18 divisors (see below), whose sum is σ = 200390796. Its totient is φ = 73670688.

The previous prime is 129061411. The next prime is 129061451. The reversal of 129061443 is 344160921.

It is not a de Polignac number, because 129061443 - 2⁵ = 129061411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129061443.

It is not an unprimeable number, because it can be changed into a prime (129061343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 137271 + ... + 138207.

It is an arithmetic number, because the mean of its divisors is an integer number (11132822).

Almost surely, 2^129061443 is an apocalyptic number.

129061443 is a deficient number, since it is larger than the sum of its proper divisors (71329353).

129061443 is an frugal number, since it uses more digits than its factorization.

129061443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 129061443 is about 11360.5212468443. The cubic root of 129061443 is about 505.3576435934.

The spelling of 129061443 in words is "one hundred twenty-nine million, sixty-one thousand, four hundred forty-three".