129673201 has 8 divisors (see below), whose sum is σ = 151812864. Its totient is φ = 108437280.

The previous prime is 129673199. The next prime is 129673231. The reversal of 129673201 is 102376921.

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

It is not a de Polignac number, because 129673201 - 2¹ = 129673199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129673231) 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, 225625 + ... + 226198.

It is an arithmetic number, because the mean of its divisors is an integer number (18976608).

Almost surely, 2^129673201 is an apocalyptic number.

It is an amenable number.

129673201 is a deficient number, since it is larger than the sum of its proper divisors (22139663).

129673201 is an equidigital number, since it uses as much as digits as its factorization.

129673201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451871.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 129673201 is about 11387.4141489629. The cubic root of 129673201 is about 506.1548592028.

The spelling of 129673201 in words is "one hundred twenty-nine million, six hundred seventy-three thousand, two hundred one".