129081460 has 12 divisors (see below), whose sum is σ = 271071108. Its totient is φ = 51632576.

The previous prime is 129081457. The next prime is 129081461. The reversal of 129081460 is 64180921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16679056 + 112402404 = 4084^2 + 10602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129081461) 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, 3227017 + ... + 3227056.

It is an arithmetic number, because the mean of its divisors is an integer number (22589259).

Almost surely, 2^129081460 is an apocalyptic number.

129081460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129081460 is an abundant number, since it is smaller than the sum of its proper divisors (141989648).

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

129081460 is a wasteful number, since it uses less digits than its factorization.

129081460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454082 (or 6454080 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 129081460 is about 11361.4022021932. The cubic root of 129081460 is about 505.3837686720.

The spelling of 129081460 in words is "one hundred twenty-nine million, eighty-one thousand, four hundred sixty".