13129403 has 12 divisors (see below), whose sum is σ = 15600672. Its totient is φ = 11012400.

The previous prime is 13129397. The next prime is 13129409. The reversal of 13129403 is 30492131.

It is an interprime number because it is at equal distance from previous prime (13129397) and next prime (13129409).

It is a de Polignac number, because none of the positive numbers 2^k-13129403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13129409) 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, 548 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (1300056).

Almost surely, 2^13129403 is an apocalyptic number.

13129403 is a deficient number, since it is larger than the sum of its proper divisors (2471269).

13129403 is an equidigital number, since it uses as much as digits as its factorization.

13129403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762 (or 5755 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13129403 is about 3623.4518073241. The cubic root of 13129403 is about 235.9110732181.

The spelling of 13129403 in words is "thirteen million, one hundred twenty-nine thousand, four hundred three".