129415503 has 16 divisors (see below), whose sum is σ = 205779456. Its totient is φ = 70736160.

The previous prime is 129415499. The next prime is 129415519. The reversal of 129415503 is 305514921.

It is not a de Polignac number, because 129415503 - 2² = 129415499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129415703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133488 + ... + 134453.

It is an arithmetic number, because the mean of its divisors is an integer number (12861216).

Almost surely, 2^129415503 is an apocalyptic number.

129415503 is a deficient number, since it is larger than the sum of its proper divisors (76363953).

129415503 is a wasteful number, since it uses less digits than its factorization.

129415503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267974.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 129415503 is about 11376.0934859028. The cubic root of 129415503 is about 505.8193450193.

The spelling of 129415503 in words is "one hundred twenty-nine million, four hundred fifteen thousand, five hundred three".