129164043 has 4 divisors (see below), whose sum is σ = 172218728. Its totient is φ = 86109360.

The previous prime is 129164029. The next prime is 129164047. The reversal of 129164043 is 340461921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340461921 = 3 ⋅113487307.

It is a de Polignac number, because none of the positive numbers 2^k-129164043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129164043.

It is not an unprimeable number, because it can be changed into a prime (129164047) 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, 21527338 + ... + 21527343.

It is an arithmetic number, because the mean of its divisors is an integer number (43054682).

Almost surely, 2^129164043 is an apocalyptic number.

129164043 is a deficient number, since it is larger than the sum of its proper divisors (43054685).

129164043 is an equidigital number, since it uses as much as digits as its factorization.

129164043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43054684.

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

The square root of 129164043 is about 11365.0359876245. The cubic root of 129164043 is about 505.4915228771.

The spelling of 129164043 in words is "one hundred twenty-nine million, one hundred sixty-four thousand, forty-three".