2043242105 has 4 divisors (see below), whose sum is σ = 2451890532. Its totient is φ = 1634593680.

The previous prime is 2043242081. The next prime is 2043242119. The reversal of 2043242105 is 5012423402.

It is a happy number.

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 400480144 + 1642761961 = 20012^2 + 40531^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2043242105 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204324206 + ... + 204324215.

It is an arithmetic number, because the mean of its divisors is an integer number (612972633).

Almost surely, 2^2043242105 is an apocalyptic number.

It is an amenable number.

2043242105 is a deficient number, since it is larger than the sum of its proper divisors (408648427).

2043242105 is an equidigital number, since it uses as much as digits as its factorization.

2043242105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408648426.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2043242105 is about 45202.2356194912. The cubic root of 2043242105 is about 1268.9366561752.

Adding to 2043242105 its reverse (5012423402), we get a palindrome (7055665507).

The spelling of 2043242105 in words is "two billion, forty-three million, two hundred forty-two thousand, one hundred five".