2142111131442 has 48 divisors (see below), whose sum is σ = 4756435833240. Its totient is φ = 696329337600.

The previous prime is 2142111131437. The next prime is 2142111131443. The reversal of 2142111131442 is 2441311112412.

2142111131442 is a `hidden beast` number, since 2 + 1 + 4 + 211 + 1 + 1 + 3 + 1 + 442 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 708389872281 + 1433721259161 = 841659^2 + 1197381^2 .

It is not an unprimeable number, because it can be changed into a prime (2142111131443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1155592 + ... + 2370572.

Almost surely, 2^{2142111131442} is an apocalyptic number.

2142111131442 is an abundant number, since it is smaller than the sum of its proper divisors (2614324701798).

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

2142111131442 is a wasteful number, since it uses less digits than its factorization.

2142111131442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217419 (or 1217416 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

Adding to 2142111131442 its reverse (2441311112412), we get a palindrome (4583422243854).

The spelling of 2142111131442 in words is "two trillion, one hundred forty-two billion, one hundred eleven million, one hundred thirty-one thousand, four hundred forty-two".