129960401 has 4 divisors (see below), whose sum is σ = 134152704. Its totient is φ = 125768100.

The previous prime is 129960371. The next prime is 129960403. The reversal of 129960401 is 104069921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104069921 = 239 ⋅435439.

It is a cyclic number.

It is not a de Polignac number, because 129960401 - 2¹⁰ = 129959377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129960403) 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, 2096105 + ... + 2096166.

It is an arithmetic number, because the mean of its divisors is an integer number (33538176).

Almost surely, 2^129960401 is an apocalyptic number.

It is an amenable number.

129960401 is a deficient number, since it is larger than the sum of its proper divisors (4192303).

129960401 is an equidigital number, since it uses as much as digits as its factorization.

129960401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192302.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 129960401 is about 11400.0175877057. The cubic root of 129960401 is about 506.5282606619.

The spelling of 129960401 in words is "one hundred twenty-nine million, nine hundred sixty thousand, four hundred one".