129410161 has 4 divisors (see below), whose sum is σ = 129670000. Its totient is φ = 129150324.

The previous prime is 129410143. The next prime is 129410173. The reversal of 129410161 is 161014921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161014921 = 271 ⋅594151.

It is a cyclic number.

It is not a de Polignac number, because 129410161 - 2⁷ = 129410033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129410111) 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, 129171 + ... + 130168.

It is an arithmetic number, because the mean of its divisors is an integer number (32417500).

Almost surely, 2^129410161 is an apocalyptic number.

It is an amenable number.

129410161 is a deficient number, since it is larger than the sum of its proper divisors (259839).

129410161 is an equidigital number, since it uses as much as digits as its factorization.

129410161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259838.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 129410161 is about 11375.8586928636. The cubic root of 129410161 is about 505.8123852037.

The spelling of 129410161 in words is "one hundred twenty-nine million, four hundred ten thousand, one hundred sixty-one".