2105156043 has 12 divisors (see below), whose sum is σ = 3046132440. Its totient is φ = 1400967456.

The previous prime is 2105156021. The next prime is 2105156047. The reversal of 2105156043 is 3406515012.

2105156043 is a `hidden beast` number, since 2 + 1 + 0 + 51 + 5 + 604 + 3 = 666.

It is not a de Polignac number, because 2105156043 - 2⁶ = 2105155979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105155998 and 2105156016.

It is not an unprimeable number, because it can be changed into a prime (2105156047) 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, 200421 + ... + 210662.

It is an arithmetic number, because the mean of its divisors is an integer number (253844370).

Almost surely, 2^2105156043 is an apocalyptic number.

2105156043 is a deficient number, since it is larger than the sum of its proper divisors (940976397).

2105156043 is a wasteful number, since it uses less digits than its factorization.

2105156043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411658 (or 411655 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2105156043 is about 45881.9795017608. The cubic root of 2105156043 is about 1281.6263594006.

The spelling of 2105156043 in words is "two billion, one hundred five million, one hundred fifty-six thousand, forty-three".