2105543141 has 4 divisors (see below), whose sum is σ = 2267508012. Its totient is φ = 1943578272.

The previous prime is 2105543129. The next prime is 2105543179. The reversal of 2105543141 is 1413455012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 875568100 + 1229975041 = 29590^2 + 35071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105543141 is a prime.

It is a super-2 number, since 2×2105543141² = 8866623837224291762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105543141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105543101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80982416 + ... + 80982441.

It is an arithmetic number, because the mean of its divisors is an integer number (566877003).

Almost surely, 2^2105543141 is an apocalyptic number.

It is an amenable number.

2105543141 is a deficient number, since it is larger than the sum of its proper divisors (161964871).

2105543141 is a wasteful number, since it uses less digits than its factorization.

2105543141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161964870.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2105543141 is about 45886.1977178323. The cubic root of 2105543141 is about 1281.7049101247.

Adding to 2105543141 its reverse (1413455012), we get a palindrome (3518998153).

The spelling of 2105543141 in words is "two billion, one hundred five million, five hundred forty-three thousand, one hundred forty-one".