2688020042 has 16 divisors (see below), whose sum is σ = 4368494592. Its totient is φ = 1235532480.

The previous prime is 2688020033. The next prime is 2688020057. The reversal of 2688020042 is 2400208862.

It is a happy number.

2688020042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2688019990 and 2688020008.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917834 + ... + 920757.

It is an arithmetic number, because the mean of its divisors is an integer number (273030912).

Almost surely, 2^2688020042 is an apocalyptic number.

2688020042 is a deficient number, since it is larger than the sum of its proper divisors (1680474550).

2688020042 is a wasteful number, since it uses less digits than its factorization.

2688020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838653.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2688020042 is about 51846.1188711363. The cubic root of 2688020042 is about 1390.4141136268.

The spelling of 2688020042 in words is "two billion, six hundred eighty-eight million, twenty thousand, forty-two".