2542660045 has 4 divisors (see below), whose sum is σ = 3051192060. Its totient is φ = 2034128032.

The previous prime is 2542660039. The next prime is 2542660069. The reversal of 2542660045 is 5400662452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 941139684 + 1601520361 = 30678^2 + 40019^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542660045 - 2³ = 2542660037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254266000 + ... + 254266009.

It is an arithmetic number, because the mean of its divisors is an integer number (762798015).

Almost surely, 2^2542660045 is an apocalyptic number.

It is an amenable number.

2542660045 is a deficient number, since it is larger than the sum of its proper divisors (508532015).

2542660045 is an equidigital number, since it uses as much as digits as its factorization.

2542660045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508532014.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 2542660045 is about 50424.7959341434. The cubic root of 2542660045 is about 1364.8851213996.

The spelling of 2542660045 in words is "two billion, five hundred forty-two million, six hundred sixty thousand, forty-five".