2542131247 has 2 divisors, whose sum is σ = 2542131248. Its totient is φ = 2542131246.

The previous prime is 2542131209. The next prime is 2542131299. The reversal of 2542131247 is 7421312452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2542131247 - 2¹¹ = 2542129199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2542135247) 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 as a sum of consecutive naturals, namely, 1271065623 + 1271065624.

It is an arithmetic number, because the mean of its divisors is an integer number (1271065624).

Almost surely, 2^2542131247 is an apocalyptic number.

2542131247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2542131247 is an equidigital number, since it uses as much as digits as its factorization.

2542131247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 2542131247 is about 50419.5522292692. The cubic root of 2542131247 is about 1364.7904962761.

Adding to 2542131247 its reverse (7421312452), we get a palindrome (9963443699).

The spelling of 2542131247 in words is "two billion, five hundred forty-two million, one hundred thirty-one thousand, two hundred forty-seven".