2542579042 has 4 divisors (see below), whose sum is σ = 3813868566. Its totient is φ = 1271289520.

The previous prime is 2542579019. The next prime is 2542579051. The reversal of 2542579042 is 2409752452.

2542579042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 1548501201 + 994077841 = 39351^2 + 31529^2 .

It is a Smith number, since the sum of its digits (40) 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 = 2542578986 and 2542579004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635644759 + ... + 635644762.

Almost surely, 2^2542579042 is an apocalyptic number.

2542579042 is a deficient number, since it is larger than the sum of its proper divisors (1271289524).

2542579042 is a wasteful number, since it uses less digits than its factorization.

2542579042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271289523.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2542579042 is about 50423.9927217193. The cubic root of 2542579042 is about 1364.8706272660.

The spelling of 2542579042 in words is "two billion, five hundred forty-two million, five hundred seventy-nine thousand, forty-two".