129041470440 has 128 divisors (see below), whose sum is σ = 430217308800. Its totient is φ = 34404733440.

The previous prime is 129041470379. The next prime is 129041470489. The reversal of 129041470440 is 44074140921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 129041470395 and 129041470404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10710820 + ... + 10722860.

It is an arithmetic number, because the mean of its divisors is an integer number (3361072725).

Almost surely, 2^129041470440 is an apocalyptic number.

129041470440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129041470440 is an abundant number, since it is smaller than the sum of its proper divisors (301175838360).

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

129041470440 is a wasteful number, since it uses less digits than its factorization.

129041470440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21984 (or 21974 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 129041470440 in words is "one hundred twenty-nine billion, forty-one million, four hundred seventy thousand, four hundred forty".