2542835578 has 4 divisors (see below), whose sum is σ = 3814253370. Its totient is φ = 1271417788.

The previous prime is 2542835557. The next prime is 2542835593. The reversal of 2542835578 is 8755382452.

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., 2471382369 + 71453209 = 49713^2 + 8453^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635708893 + ... + 635708896.

Almost surely, 2^2542835578 is an apocalyptic number.

2542835578 is a deficient number, since it is larger than the sum of its proper divisors (1271417792).

2542835578 is a wasteful number, since it uses less digits than its factorization.

2542835578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271417791.

The product of its digits is 2688000, while the sum is 49.

The square root of 2542835578 is about 50426.5364465972. The cubic root of 2542835578 is about 1364.9165290413.

The spelling of 2542835578 in words is "two billion, five hundred forty-two million, eight hundred thirty-five thousand, five hundred seventy-eight".