129424501 has 2 divisors, whose sum is σ = 129424502. Its totient is φ = 129424500.

The previous prime is 129424489. The next prime is 129424541. The reversal of 129424501 is 105424921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122080401 + 7344100 = 11049^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 129424501 - 2¹¹ = 129422453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129424501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129424541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64712250 + 64712251.

It is an arithmetic number, because the mean of its divisors is an integer number (64712251).

Almost surely, 2^129424501 is an apocalyptic number.

It is an amenable number.

129424501 is a deficient number, since it is larger than the sum of its proper divisors (1).

129424501 is an equidigital number, since it uses as much as digits as its factorization.

129424501 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 129424501 is about 11376.4889574948. The cubic root of 129424501 is about 505.8310676154.

The spelling of 129424501 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, five hundred one".