2102111042 has 8 divisors (see below), whose sum is σ = 3153585036. Its totient is φ = 1050916032.

The previous prime is 2102111017. The next prime is 2102111071. The reversal of 2102111042 is 2401112012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2098647721 + 3463321 = 45811^2 + 1861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49763 + ... + 81734.

Almost surely, 2^2102111042 is an apocalyptic number.

2102111042 is a deficient number, since it is larger than the sum of its proper divisors (1051473994).

2102111042 is a wasteful number, since it uses less digits than its factorization.

2102111042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139492.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2102111042 is about 45848.7845204210. The cubic root of 2102111042 is about 1281.0081254717.

Adding to 2102111042 its reverse (2401112012), we get a palindrome (4503223054).

The spelling of 2102111042 in words is "two billion, one hundred two million, one hundred eleven thousand, forty-two".