2543005042 has 8 divisors (see below), whose sum is σ = 3917602476. Its totient is φ = 1237137552.

The previous prime is 2543005039. The next prime is 2543005057. The reversal of 2543005042 is 2405003452.

It can be written as a sum of positive squares in 2 ways, for example, as 2289526801 + 253478241 = 47849^2 + 15921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2543004998 and 2543005016.

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 in 3 ways as a sum of consecutive naturals, for example, 17182393 + ... + 17182540.

Almost surely, 2^2543005042 is an apocalyptic number.

2543005042 is a deficient number, since it is larger than the sum of its proper divisors (1374597434).

2543005042 is a wasteful number, since it uses less digits than its factorization.

2543005042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34364972.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 2543005042 is about 50428.2167243697. The cubic root of 2543005042 is about 1364.9468494021.

Adding to 2543005042 its reverse (2405003452), we get a palindrome (4948008494).

The spelling of 2543005042 in words is "two billion, five hundred forty-three million, five thousand, forty-two".