2105543142 has 24 divisors (see below), whose sum is σ = 4760359344. Its totient is φ = 671332464.

The previous prime is 2105543129. The next prime is 2105543179. The reversal of 2105543142 is 2413455012.

2105543142 is a `hidden beast` number, since 2 + 105 + 543 + 14 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2542513 + ... + 2543340.

It is an arithmetic number, because the mean of its divisors is an integer number (198348306).

Almost surely, 2^2105543142 is an apocalyptic number.

2105543142 is an abundant number, since it is smaller than the sum of its proper divisors (2654816202).

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

2105543142 is a wasteful number, since it uses less digits than its factorization.

2105543142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085884 (or 5085881 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2105543142 is about 45886.1977287288. The cubic root of 2105543142 is about 1281.7049103277.

Adding to 2105543142 its reverse (2413455012), we get a palindrome (4518998154).

The spelling of 2105543142 in words is "two billion, one hundred five million, five hundred forty-three thousand, one hundred forty-two".