129524401 has 2 divisors, whose sum is σ = 129524402. Its totient is φ = 129524400.

The previous prime is 129524399. The next prime is 129524407. The reversal of 129524401 is 104425921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70157376 + 59367025 = 8376^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 129524401 - 2¹ = 129524399 is a prime.

Together with 129524399, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129524401.

It is not a weakly prime, because it can be changed into another prime (129524407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64762200 + 64762201.

It is an arithmetic number, because the mean of its divisors is an integer number (64762201).

Almost surely, 2^129524401 is an apocalyptic number.

It is an amenable number.

129524401 is a deficient number, since it is larger than the sum of its proper divisors (1).

129524401 is an equidigital number, since it uses as much as digits as its factorization.

129524401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 129524401 is about 11380.8787446313. The cubic root of 129524401 is about 505.9611808659.

The spelling of 129524401 in words is "one hundred twenty-nine million, five hundred twenty-four thousand, four hundred one".