12142284538 has 16 divisors (see below), whose sum is σ = 18870359040. Its totient is φ = 5853610800.

The previous prime is 12142284449. The next prime is 12142284541. The reversal of 12142284538 is 83548224121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12142284538.

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, 344533 + ... + 378136.

It is an arithmetic number, because the mean of its divisors is an integer number (1179397440).

Almost surely, 2^12142284538 is an apocalyptic number.

12142284538 is a deficient number, since it is larger than the sum of its proper divisors (6728074502).

12142284538 is a wasteful number, since it uses less digits than its factorization.

12142284538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722973.

The product of its digits is 122880, while the sum is 40.

The spelling of 12142284538 in words is "twelve billion, one hundred forty-two million, two hundred eighty-four thousand, five hundred thirty-eight".