12015121400142 has 16 divisors (see below), whose sum is σ = 27463134628992. Its totient is φ = 3432891828600.

The previous prime is 12015121400129. The next prime is 12015121400171. The reversal of 12015121400142 is 24100412151021.

12015121400142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143037159484 + ... + 143037159567.

It is an arithmetic number, because the mean of its divisors is an integer number (1716445914312).

Almost surely, 2^{12015121400142} is an apocalyptic number.

12015121400142 is an abundant number, since it is smaller than the sum of its proper divisors (15448013228850).

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

12015121400142 is a wasteful number, since it uses less digits than its factorization.

12015121400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286074319063.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 12015121400142 its reverse (24100412151021), we get a palindrome (36115533551163).

The spelling of 12015121400142 in words is "twelve trillion, fifteen billion, one hundred twenty-one million, four hundred thousand, one hundred forty-two".