2542240249 has 4 divisors (see below), whose sum is σ = 2548878336. Its totient is φ = 2535602164.

The previous prime is 2542240237. The next prime is 2542240279. The reversal of 2542240249 is 9420422452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2542240249 - 2⁷ = 2542240121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542240229) by changing a digit.

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, 3318469 + ... + 3319234.

It is an arithmetic number, because the mean of its divisors is an integer number (637219584).

Almost surely, 2^2542240249 is an apocalyptic number.

It is an amenable number.

2542240249 is a deficient number, since it is larger than the sum of its proper divisors (6638087).

2542240249 is an equidigital number, since it uses as much as digits as its factorization.

2542240249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638086.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 2542240249 is about 50420.6331673850. The cubic root of 2542240249 is about 1364.8100025818.

The spelling of 2542240249 in words is "two billion, five hundred forty-two million, two hundred forty thousand, two hundred forty-nine".