2108738242 has 32 divisors (see below), whose sum is σ = 3674894832. Its totient is φ = 898719744.

The previous prime is 2108738239. The next prime is 2108738251. The reversal of 2108738242 is 2428378012.

It is a Cunningham number, because it is equal to 45921²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1641789361 + 466948881 = 40519^2 + 21609^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21583 + ... + 68434.

Almost surely, 2^2108738242 is an apocalyptic number.

2108738242 is a deficient number, since it is larger than the sum of its proper divisors (1566156590).

2108738242 is a wasteful number, since it uses less digits than its factorization.

2108738242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90102.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 2108738242 is about 45921.0000108883. Note that the first 4 decimals coincide. The cubic root of 2108738242 is about 1282.3528992140.

The spelling of 2108738242 in words is "two billion, one hundred eight million, seven hundred thirty-eight thousand, two hundred forty-two".