12340578729142 has 16 divisors (see below), whose sum is σ = 18787522940352. Its totient is φ = 6078074741640.

The previous prime is 12340578729133. The next prime is 12340578729169. The reversal of 12340578729142 is 24192787504321.

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, 6052717 + ... + 7830487.

It is an arithmetic number, because the mean of its divisors is an integer number (1174220183772).

Almost surely, 2^{12340578729142} is an apocalyptic number.

12340578729142 is a deficient number, since it is larger than the sum of its proper divisors (6446944211210).

12340578729142 is a wasteful number, since it uses less digits than its factorization.

12340578729142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829643.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 12340578729142 in words is "twelve trillion, three hundred forty billion, five hundred seventy-eight million, seven hundred twenty-nine thousand, one hundred forty-two".