129038223 has 8 divisors (see below), whose sum is σ = 173406208. Its totient is φ = 85347864.

The previous prime is 129038219. The next prime is 129038243. The reversal of 129038223 is 322830921.

It is a happy number.

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

It is not a de Polignac number, because 129038223 - 2² = 129038219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129038243) 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, 168961 + ... + 169722.

It is an arithmetic number, because the mean of its divisors is an integer number (21675776).

Almost surely, 2^129038223 is an apocalyptic number.

129038223 is a deficient number, since it is larger than the sum of its proper divisors (44367985).

129038223 is a wasteful number, since it uses less digits than its factorization.

129038223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338813.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 129038223 is about 11359.4992407236. The cubic root of 129038223 is about 505.3273347523.

The spelling of 129038223 in words is "one hundred twenty-nine million, thirty-eight thousand, two hundred twenty-three".