129024001 has 4 divisors (see below), whose sum is σ = 129240000. Its totient is φ = 128808004.

The previous prime is 129023989. The next prime is 129024029. The reversal of 129024001 is 100420921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129024001 - 2¹¹ = 129021953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129024001.

It is not an unprimeable number, because it can be changed into a prime (129024031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107101 + ... + 108298.

It is an arithmetic number, because the mean of its divisors is an integer number (32310000).

It is a Proth number, since it is equal to 7875 ⋅ 2¹⁴ + 1 and 7875 < 2¹⁴.

Almost surely, 2^129024001 is an apocalyptic number.

It is an amenable number.

129024001 is a deficient number, since it is larger than the sum of its proper divisors (215999).

129024001 is an equidigital number, since it uses as much as digits as its factorization.

129024001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215998.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 129024001 is about 11358.8732275697. The cubic root of 129024001 is about 505.3087691180.

Adding to 129024001 its reverse (100420921), we get a palindrome (229444922).

The spelling of 129024001 in words is "one hundred twenty-nine million, twenty-four thousand, one".