129240480084521 has 8 divisors (see below), whose sum is σ = 139183460036544. Its totient is φ = 119297700784080.

The previous prime is 129240480084511. The next prime is 129240480084619. The reversal of 129240480084521 is 125480084042921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129240480084521 - 2²⁶ = 129240412975657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129240480084521.

It is not an unprimeable number, because it can be changed into a prime (129240480084511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48823811 + ... + 51402776.

It is an arithmetic number, because the mean of its divisors is an integer number (17397932504568).

Almost surely, 2^{129240480084521} is an apocalyptic number.

It is an amenable number.

129240480084521 is a deficient number, since it is larger than the sum of its proper divisors (9942979952023).

129240480084521 is a wasteful number, since it uses less digits than its factorization.

129240480084521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100325791.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 129240480084521 in words is "one hundred twenty-nine trillion, two hundred forty billion, four hundred eighty million, eighty-four thousand, five hundred twenty-one".