2105843427 has 10 divisors (see below), whose sum is σ = 3145766228. Its totient is φ = 1403895564.

The previous prime is 2105843417. The next prime is 2105843449. The reversal of 2105843427 is 7243485012.

It is a happy number.

2105843427 is a `hidden beast` number, since 21 + 0 + 584 + 34 + 27 = 666.

It is not a de Polignac number, because 2105843427 - 2²⁴ = 2089066211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105843391 and 2105843400.

It is not an unprimeable number, because it can be changed into a prime (2105843417) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12998953 + ... + 12999114.

Almost surely, 2^2105843427 is an apocalyptic number.

2105843427 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2105843427 is a deficient number, since it is larger than the sum of its proper divisors (1039922801).

2105843427 is an equidigital number, since it uses as much as digits as its factorization.

2105843427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25998079 (or 25998070 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 2105843427 is about 45889.4696744253. The cubic root of 2105843427 is about 1281.7658381482.

The spelling of 2105843427 in words is "two billion, one hundred five million, eight hundred forty-three thousand, four hundred twenty-seven".