129119401 has 4 divisors (see below), whose sum is σ = 134733312. Its totient is φ = 123505492.

The previous prime is 129119399. The next prime is 129119423. The reversal of 129119401 is 104911921.

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: 104911921 = 79 ⋅1327999.

It is not a de Polignac number, because 129119401 - 2¹ = 129119399 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 129119401.

It is not an unprimeable number, because it can be changed into a prime (129119201) 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, 2806921 + ... + 2806966.

It is an arithmetic number, because the mean of its divisors is an integer number (33683328).

Almost surely, 2^129119401 is an apocalyptic number.

It is an amenable number.

129119401 is a deficient number, since it is larger than the sum of its proper divisors (5613911).

129119401 is an equidigital number, since it uses as much as digits as its factorization.

129119401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613910.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 129119401 is about 11363.0718117946. The cubic root of 129119401 is about 505.4332797512.

The spelling of 129119401 in words is "one hundred twenty-nine million, one hundred nineteen thousand, four hundred one".