2120004043 has 4 divisors (see below), whose sum is σ = 2165110560. Its totient is φ = 2074897528.

The previous prime is 2120003971. The next prime is 2120004053. The reversal of 2120004043 is 3404000212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120004043 - 2⁹ = 2120003531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120004053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22553188 + ... + 22553281.

It is an arithmetic number, because the mean of its divisors is an integer number (541277640).

Almost surely, 2^2120004043 is an apocalyptic number.

2120004043 is a deficient number, since it is larger than the sum of its proper divisors (45106517).

2120004043 is an equidigital number, since it uses as much as digits as its factorization.

2120004043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45106516.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2120004043 is about 46043.5016370389. The cubic root of 2120004043 is about 1284.6324743418.

Adding to 2120004043 its reverse (3404000212), we get a palindrome (5524004255).

The spelling of 2120004043 in words is "two billion, one hundred twenty million, four thousand, forty-three".