2105203442 has 4 divisors (see below), whose sum is σ = 3157805166. Its totient is φ = 1052601720.

The previous prime is 2105203403. The next prime is 2105203469. The reversal of 2105203442 is 2443025012.

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 only one way, i.e., 2069431081 + 35772361 = 45491^2 + 5981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526300859 + ... + 526300862.

Almost surely, 2^2105203442 is an apocalyptic number.

2105203442 is a deficient number, since it is larger than the sum of its proper divisors (1052601724).

2105203442 is a wasteful number, since it uses less digits than its factorization.

2105203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052601723.

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

The square root of 2105203442 is about 45882.4960306215. The cubic root of 2105203442 is about 1281.6359782207.

Adding to 2105203442 its reverse (2443025012), we get a palindrome (4548228454).

The spelling of 2105203442 in words is "two billion, one hundred five million, two hundred three thousand, four hundred forty-two".