129379371 has 24 divisors (see below), whose sum is σ = 191443392. Its totient is φ = 77655600.

The previous prime is 129379363. The next prime is 129379387. The reversal of 129379371 is 173973921.

It is not a de Polignac number, because 129379371 - 2³ = 129379363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129379351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37176 + ... + 40506.

It is an arithmetic number, because the mean of its divisors is an integer number (7976808).

Almost surely, 2^129379371 is an apocalyptic number.

129379371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129379371 is a deficient number, since it is larger than the sum of its proper divisors (62064021).

129379371 is a wasteful number, since it uses less digits than its factorization.

129379371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3452 counting only the distinct ones).

The product of its digits is 71442, while the sum is 42.

The square root of 129379371 is about 11374.5053079244. The cubic root of 129379371 is about 505.7722667706.

The spelling of 129379371 in words is "one hundred twenty-nine million, three hundred seventy-nine thousand, three hundred seventy-one".