129424241 has 8 divisors (see below), whose sum is σ = 130554984. Its totient is φ = 128298240.

The previous prime is 129424223. The next prime is 129424271. The reversal of 129424241 is 142424921.

It can be written as a sum of positive squares in 4 ways, for example, as 9740641 + 119683600 = 3121^2 + 10940^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129424241 - 2⁶ = 129424177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129424271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71945 + ... + 73721.

It is an arithmetic number, because the mean of its divisors is an integer number (16319373).

Almost surely, 2^129424241 is an apocalyptic number.

It is an amenable number.

129424241 is a deficient number, since it is larger than the sum of its proper divisors (1130743).

129424241 is a wasteful number, since it uses less digits than its factorization.

129424241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371.

The product of its digits is 4608, while the sum is 29.

The square root of 129424241 is about 11376.4775304134. The cubic root of 129424241 is about 505.8307288949.

The spelling of 129424241 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, two hundred forty-one".