129216504 has 16 divisors (see below), whose sum is σ = 323041320. Its totient is φ = 43072160.

The previous prime is 129216499. The next prime is 129216509. The reversal of 129216504 is 405612921.

It is an interprime number because it is at equal distance from previous prime (129216499) and next prime (129216509).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129216509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691987 + ... + 2692034.

Almost surely, 2^129216504 is an apocalyptic number.

It is an amenable number.

129216504 is an abundant number, since it is smaller than the sum of its proper divisors (193824816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129216504 is a wasteful number, since it uses less digits than its factorization.

129216504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384030 (or 5384026 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129216504 is about 11367.3437530498. The cubic root of 129216504 is about 505.5599500770.

The spelling of 129216504 in words is "one hundred twenty-nine million, two hundred sixteen thousand, five hundred four".