129465980 has 24 divisors (see below), whose sum is σ = 310718688. Its totient is φ = 44388288.

The previous prime is 129465979. The next prime is 129466009. The reversal of 129465980 is 89564921.

129465980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129465980² = 33522879954720800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462239 + ... + 462518.

It is an arithmetic number, because the mean of its divisors is an integer number (12946612).

Almost surely, 2^129465980 is an apocalyptic number.

129465980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129465980 is an abundant number, since it is smaller than the sum of its proper divisors (181252708).

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

129465980 is a wasteful number, since it uses less digits than its factorization.

129465980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924773 (or 924771 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 129465980 is about 11378.3118255741. The cubic root of 129465980 is about 505.8850994400.

The spelling of 129465980 in words is "one hundred twenty-nine million, four hundred sixty-five thousand, nine hundred eighty".