2680440042 has 32 divisors (see below), whose sum is σ = 6251760000. Its totient is φ = 765839424.

The previous prime is 2680440011. The next prime is 2680440047. The reversal of 2680440042 is 2400440862.

2680440042 is digitally balanced in base 2 and base 4, because in such bases 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 = 2680439991 and 2680440009.

It is not an unprimeable number, because it can be changed into a prime (2680440047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649167 + ... + 653282.

It is an arithmetic number, because the mean of its divisors is an integer number (195367500).

Almost surely, 2^2680440042 is an apocalyptic number.

2680440042 is an abundant number, since it is smaller than the sum of its proper divisors (3571319958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2680440042 is a wasteful number, since it uses less digits than its factorization.

2680440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302475 (or 1302461 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 2680440042 is about 51772.9663241348. The cubic root of 2680440042 is about 1389.1059312644.

The spelling of 2680440042 in words is "two billion, six hundred eighty million, four hundred forty thousand, forty-two".