129057601 has 4 divisors (see below), whose sum is σ = 129090304. Its totient is φ = 129024900.

The previous prime is 129057589. The next prime is 129057647. The reversal of 129057601 is 106750921.

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: 106750921 = 41 ⋅2603681.

It is a cyclic number.

It is not a de Polignac number, because 129057601 - 2¹³ = 129049409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129057001) 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, 9465 + ... + 18646.

It is an arithmetic number, because the mean of its divisors is an integer number (32272576).

Almost surely, 2^129057601 is an apocalyptic number.

It is an amenable number.

129057601 is a deficient number, since it is larger than the sum of its proper divisors (32703).

129057601 is an equidigital number, since it uses as much as digits as its factorization.

129057601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32702.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 129057601 is about 11360.3521512319. The cubic root of 129057601 is about 505.3526289190.

The spelling of 129057601 in words is "one hundred twenty-nine million, fifty-seven thousand, six hundred one".