129845738 has 16 divisors (see below), whose sum is σ = 214008480. Its totient is φ = 58594800.

The previous prime is 129845719. The next prime is 129845747. The reversal of 129845738 is 837548921.

It is a happy number.

129845738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 129845692 and 129845701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18173 + ... + 24288.

It is an arithmetic number, because the mean of its divisors is an integer number (13375530).

Almost surely, 2^129845738 is an apocalyptic number.

129845738 is a deficient number, since it is larger than the sum of its proper divisors (84162742).

129845738 is a wasteful number, since it uses less digits than its factorization.

129845738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42613.

The product of its digits is 483840, while the sum is 47.

The square root of 129845738 is about 11394.9874067504. The cubic root of 129845738 is about 506.3792482472.

The spelling of 129845738 in words is "one hundred twenty-nine million, eight hundred forty-five thousand, seven hundred thirty-eight".