129145360 has 20 divisors (see below), whose sum is σ = 300263148. Its totient is φ = 51658112.

The previous prime is 129145343. The next prime is 129145397. The reversal of 129145360 is 63541921.

It can be written as a sum of positive squares in 2 ways, for example, as 41835024 + 87310336 = 6468^2 + 9344^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807079 + ... + 807238.

Almost surely, 2^129145360 is an apocalyptic number.

129145360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129145360 is an abundant number, since it is smaller than the sum of its proper divisors (171117788).

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

129145360 is a wasteful number, since it uses less digits than its factorization.

129145360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614330 (or 1614324 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 129145360 is about 11364.2140071366. The cubic root of 129145360 is about 505.4671493407.

The spelling of 129145360 in words is "one hundred twenty-nine million, one hundred forty-five thousand, three hundred sixty".