7842202042 has 4 divisors (see below), whose sum is σ = 11763303066. Its totient is φ = 3921101020.

The previous prime is 7842202037. The next prime is 7842202073. The reversal of 7842202042 is 2402022487.

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., 6661661161 + 1180540881 = 81619^2 + 34359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7842201995 and 7842202013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960550509 + ... + 1960550512.

Almost surely, 2^7842202042 is an apocalyptic number.

7842202042 is a deficient number, since it is larger than the sum of its proper divisors (3921101024).

7842202042 is a wasteful number, since it uses less digits than its factorization.

7842202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921101023.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 7842202042 is about 88556.2083763753. The cubic root of 7842202042 is about 1986.7627510783.

The spelling of 7842202042 in words is "seven billion, eight hundred forty-two million, two hundred two thousand, forty-two".