12142194281919 has 12 divisors (see below), whose sum is σ = 18887857772056. Its totient is φ = 7472119558032.

The previous prime is 12142194281869. The next prime is 12142194281933. The reversal of 12142194281919 is 91918249124121.

It is a happy number.

12142194281919 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 21 + 9 + 428 + 191 + 9 = 666.

It is not a de Polignac number, because 12142194281919 - 2¹¹ = 12142194279871 is a prime.

It is a super-4 number, since 4×12142194281919⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142194281989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51889719037 + ... + 51889719270.

Almost surely, 2^{12142194281919} is an apocalyptic number.

12142194281919 is a deficient number, since it is larger than the sum of its proper divisors (6745663490137).

12142194281919 is a wasteful number, since it uses less digits than its factorization.

12142194281919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103779438326 (or 103779438323 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The spelling of 12142194281919 in words is "twelve trillion, one hundred forty-two billion, one hundred ninety-four million, two hundred eighty-one thousand, nine hundred nineteen".