129342744973932 has 144 divisors (see below), whose sum is σ = 349895467369728. Its totient is φ = 36428320512000.

The previous prime is 129342744973919. The next prime is 129342744973999. The reversal of 129342744973932 is 239379447243921.

It is a super-2 number, since 2×129342744973932² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198053358 + ... + 198705354.

It is an arithmetic number, because the mean of its divisors is an integer number (2429829634512).

Almost surely, 2^{129342744973932} is an apocalyptic number.

129342744973932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129342744973932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174947733684864).

129342744973932 is an abundant number, since it is smaller than the sum of its proper divisors (220552722395796).

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

129342744973932 is a wasteful number, since it uses less digits than its factorization.

129342744973932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652456 (or 652357 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 69.

The spelling of 129342744973932 in words is "one hundred twenty-nine trillion, three hundred forty-two billion, seven hundred forty-four million, nine hundred seventy-three thousand, nine hundred thirty-two".