129503033 has 12 divisors (see below), whose sum is σ = 143742144. Its totient is φ = 116575800.

The previous prime is 129503029. The next prime is 129503039. The reversal of 129503033 is 330305921.

It is not a de Polignac number, because 129503033 - 2² = 129503029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129502993 and 129503011.

It is not an unprimeable number, because it can be changed into a prime (129503039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7268 + ... + 17658.

It is an arithmetic number, because the mean of its divisors is an integer number (11978512).

Almost surely, 2^129503033 is an apocalyptic number.

It is an amenable number.

129503033 is a deficient number, since it is larger than the sum of its proper divisors (14239111).

129503033 is a wasteful number, since it uses less digits than its factorization.

129503033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10516 (or 10505 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 129503033 is about 11379.9399383301. The cubic root of 129503033 is about 505.9333560622.

Adding to 129503033 its reverse (330305921), we get a palindrome (459808954).

The spelling of 129503033 in words is "one hundred twenty-nine million, five hundred three thousand, thirty-three".