129341205 has 80 divisors (see below), whose sum is σ = 271396224. Its totient is φ = 57697920.

The previous prime is 129341171. The next prime is 129341221. The reversal of 129341205 is 502143921.

It is not a de Polignac number, because 129341205 - 2⁷ = 129341077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 121375 + ... + 122435.

Almost surely, 2^129341205 is an apocalyptic number.

129341205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129341205 is an abundant number, since it is smaller than the sum of its proper divisors (142055019).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129341205 is a wasteful number, since it uses less digits than its factorization.

129341205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 129341205 is about 11372.8274848430. The cubic root of 129341205 is about 505.7225287982.

The spelling of 129341205 in words is "one hundred twenty-nine million, three hundred forty-one thousand, two hundred five".