129504503 has 2 divisors, whose sum is σ = 129504504. Its totient is φ = 129504502.

The previous prime is 129504499. The next prime is 129504511. The reversal of 129504503 is 305405921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129504503 - 2² = 129504499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129504103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64752251 + 64752252.

It is an arithmetic number, because the mean of its divisors is an integer number (64752252).

Almost surely, 2^129504503 is an apocalyptic number.

129504503 is a deficient number, since it is larger than the sum of its proper divisors (1).

129504503 is an equidigital number, since it uses as much as digits as its factorization.

129504503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 129504503 is about 11380.0045254824. The cubic root of 129504503 is about 505.9352703526.

The spelling of 129504503 in words is "one hundred twenty-nine million, five hundred four thousand, five hundred three".