12129817328142 has 16 divisors (see below), whose sum is σ = 24351876616320. Its totient is φ = 4027898782712.

The previous prime is 12129817328113. The next prime is 12129817328143. The reversal of 12129817328142 is 24182371892121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129817328143) 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, 3843413292 + ... + 3843416447.

It is an arithmetic number, because the mean of its divisors is an integer number (1521992288520).

Almost surely, 2^{12129817328142} is an apocalyptic number.

12129817328142 is an abundant number, since it is smaller than the sum of its proper divisors (12222059288178).

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

12129817328142 is a wasteful number, since it uses less digits than its factorization.

12129817328142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7686830007.

The product of its digits is 774144, while the sum is 51.

The spelling of 12129817328142 in words is "twelve trillion, one hundred twenty-nine billion, eight hundred seventeen million, three hundred twenty-eight thousand, one hundred forty-two".