129626038 has 4 divisors (see below), whose sum is σ = 194439060. Its totient is φ = 64813018.

The previous prime is 129626033. The next prime is 129626053. The reversal of 129626038 is 830626921.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 129625988 and 129626006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129626033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32406508 + ... + 32406511.

It is an arithmetic number, because the mean of its divisors is an integer number (48609765).

Almost surely, 2^129626038 is an apocalyptic number.

129626038 is a deficient number, since it is larger than the sum of its proper divisors (64813022).

129626038 is an equidigital number, since it uses as much as digits as its factorization.

129626038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64813021.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 129626038 is about 11385.3431217509. The cubic root of 129626038 is about 506.0934878063.

The spelling of 129626038 in words is "one hundred twenty-nine million, six hundred twenty-six thousand, thirty-eight".