2103420043 has 4 divisors (see below), whose sum is σ = 2134814440. Its totient is φ = 2072025648.

The previous prime is 2103420001. The next prime is 2103420073. The reversal of 2103420043 is 3400243012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103420043 is a prime.

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 2103420043.

It is not an unprimeable number, because it can be changed into a prime (2103420073) 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, 15697098 + ... + 15697231.

It is an arithmetic number, because the mean of its divisors is an integer number (533703610).

Almost surely, 2^2103420043 is an apocalyptic number.

2103420043 is a deficient number, since it is larger than the sum of its proper divisors (31394397).

2103420043 is an equidigital number, since it uses as much as digits as its factorization.

2103420043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31394396.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2103420043 is about 45863.0574972930. The cubic root of 2103420043 is about 1281.2739682274.

Adding to 2103420043 its reverse (3400243012), we get a palindrome (5503663055).

The spelling of 2103420043 in words is "two billion, one hundred three million, four hundred twenty thousand, forty-three".