129924271 has 2 divisors, whose sum is σ = 129924272. Its totient is φ = 129924270.

The previous prime is 129924259. The next prime is 129924281. The reversal of 129924271 is 172429921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129924271 - 2⁷ = 129924143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129924271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129924241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64962135 + 64962136.

It is an arithmetic number, because the mean of its divisors is an integer number (64962136).

Almost surely, 2^129924271 is an apocalyptic number.

129924271 is a deficient number, since it is larger than the sum of its proper divisors (1).

129924271 is an equidigital number, since it uses as much as digits as its factorization.

129924271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 129924271 is about 11398.4328308764. The cubic root of 129924271 is about 506.4813167157.

The spelling of 129924271 in words is "one hundred twenty-nine million, nine hundred twenty-four thousand, two hundred seventy-one".