129381038 has 8 divisors (see below), whose sum is σ = 195852360. Its totient is φ = 64096920.

The previous prime is 129381029. The next prime is 129381053. The reversal of 129381038 is 830183921.

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

It is a junction number, because it is equal to n+sod(n) for n = 129380989 and 129381007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296528 + ... + 296963.

It is an arithmetic number, because the mean of its divisors is an integer number (24481545).

Almost surely, 2^129381038 is an apocalyptic number.

129381038 is a deficient number, since it is larger than the sum of its proper divisors (66471322).

129381038 is a wasteful number, since it uses less digits than its factorization.

129381038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593602.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 129381038 is about 11374.5785856004. The cubic root of 129381038 is about 505.7744389839.

The spelling of 129381038 in words is "one hundred twenty-nine million, three hundred eighty-one thousand, thirty-eight".