4105240042 has 4 divisors (see below), whose sum is σ = 6157860066. Its totient is φ = 2052620020.

The previous prime is 4105239989. The next prime is 4105240081. The reversal of 4105240042 is 2400425014.

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., 4099712841 + 5527201 = 64029^2 + 2351^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4105239995 and 4105240022.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1026310009 + ... + 1026310012.

Almost surely, 2^4105240042 is an apocalyptic number.

4105240042 is a deficient number, since it is larger than the sum of its proper divisors (2052620024).

4105240042 is a wasteful number, since it uses less digits than its factorization.

4105240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052620023.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 4105240042 is about 64072.1471623981. The cubic root of 4105240042 is about 1601.2022268990.

Adding to 4105240042 its reverse (2400425014), we get a palindrome (6505665056).

The spelling of 4105240042 in words is "four billion, one hundred five million, two hundred forty thousand, forty-two".