129119680 has 28 divisors (see below), whose sum is σ = 307467000. Its totient is φ = 51647744.

The previous prime is 129119651. The next prime is 129119689. The reversal of 129119680 is 86911921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129119689) 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 3 ways as a sum of consecutive naturals, for example, 201430 + ... + 202069.

Almost surely, 2^129119680 is an apocalyptic number.

129119680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129119680 is an abundant number, since it is smaller than the sum of its proper divisors (178347320).

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

129119680 is an equidigital number, since it uses as much as digits as its factorization.

129119680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403516 (or 403506 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 129119680 is about 11363.0840883978. The cubic root of 129119680 is about 505.4336437961.

The spelling of 129119680 in words is "one hundred twenty-nine million, one hundred nineteen thousand, six hundred eighty".