129504453 has 32 divisors (see below), whose sum is σ = 203277312. Its totient is φ = 72576000.

The previous prime is 129504439. The next prime is 129504457. The reversal of 129504453 is 354405921.

It is not a de Polignac number, because 129504453 - 2⁸ = 129504197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129504457) 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 31 ways as a sum of consecutive naturals, for example, 17403 + ... + 23703.

It is an arithmetic number, because the mean of its divisors is an integer number (6352416).

Almost surely, 2^129504453 is an apocalyptic number.

129504453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

129504453 is a deficient number, since it is larger than the sum of its proper divisors (73772859).

129504453 is a wasteful number, since it uses less digits than its factorization.

129504453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 129504453 is about 11380.0023286465. The cubic root of 129504453 is about 505.9352052409.

The spelling of 129504453 in words is "one hundred twenty-nine million, five hundred four thousand, four hundred fifty-three".