129522371 has 16 divisors (see below), whose sum is σ = 154441728. Its totient is φ = 107241600.

The previous prime is 129522353. The next prime is 129522391. The reversal of 129522371 is 173225921.

It is a cyclic number.

It is not a de Polignac number, because 129522371 - 2⁶ = 129522307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129522391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5375 + ... + 16968.

It is an arithmetic number, because the mean of its divisors is an integer number (9652608).

Almost surely, 2^129522371 is an apocalyptic number.

129522371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129522371 is a deficient number, since it is larger than the sum of its proper divisors (24919357).

129522371 is a wasteful number, since it uses less digits than its factorization.

129522371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22402.

The product of its digits is 7560, while the sum is 32.

The square root of 129522371 is about 11380.7895596044. The cubic root of 129522371 is about 505.9585375890.

The spelling of 129522371 in words is "one hundred twenty-nine million, five hundred twenty-two thousand, three hundred seventy-one".