129180224 has 28 divisors (see below), whose sum is σ = 264615168. Its totient is φ = 62505600.

The previous prime is 129180211. The next prime is 129180257. The reversal of 129180224 is 422081921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30572 + ... + 34539.

Almost surely, 2^129180224 is an apocalyptic number.

It is an amenable number.

129180224 is an abundant number, since it is smaller than the sum of its proper divisors (135434944).

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

129180224 is an equidigital number, since it uses as much as digits as its factorization.

129180224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65154 (or 65144 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 129180224 is about 11365.7478416512. The cubic root of 129180224 is about 505.5126304460.

The spelling of 129180224 in words is "one hundred twenty-nine million, one hundred eighty thousand, two hundred twenty-four".