129238803 has 12 divisors (see below), whose sum is σ = 186781608. Its totient is φ = 86111520.

The previous prime is 129238801. The next prime is 129238807. The reversal of 129238803 is 308832921.

It is a happy number.

It is not a de Polignac number, because 129238803 - 2¹ = 129238801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129238801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22408 + ... + 27578.

It is an arithmetic number, because the mean of its divisors is an integer number (15565134).

Almost surely, 2^129238803 is an apocalyptic number.

129238803 is a deficient number, since it is larger than the sum of its proper divisors (57542805).

129238803 is a wasteful number, since it uses less digits than its factorization.

129238803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7951 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 129238803 is about 11368.3245467395. The cubic root of 129238803 is about 505.5890300385.

The spelling of 129238803 in words is "one hundred twenty-nine million, two hundred thirty-eight thousand, eight hundred three".