12143511342 has 72 divisors (see below), whose sum is σ = 27683228664. Its totient is φ = 3846709152.

The previous prime is 12143511337. The next prime is 12143511371. The reversal of 12143511342 is 24311534121.

12143511342 is a `hidden beast` number, since 1 + 2 + 143 + 511 + 3 + 4 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1490893 + ... + 1499015.

It is an arithmetic number, because the mean of its divisors is an integer number (384489287).

Almost surely, 2^12143511342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143511342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13841614332).

12143511342 is an abundant number, since it is smaller than the sum of its proper divisors (15539717322).

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

12143511342 is a wasteful number, since it uses less digits than its factorization.

12143511342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8334 (or 8308 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The spelling of 12143511342 in words is "twelve billion, one hundred forty-three million, five hundred eleven thousand, three hundred forty-two".