2540274421 has 2 divisors, whose sum is σ = 2540274422. Its totient is φ = 2540274420.

The previous prime is 2540274403. The next prime is 2540274439. The reversal of 2540274421 is 1244720452.

It is a balanced prime because it is at equal distance from previous prime (2540274403) and next prime (2540274439).

It can be written as a sum of positive squares in only one way, i.e., 1529670321 + 1010604100 = 39111^2 + 31790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540274421 - 2⁵ = 2540274389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540274461) 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, 1270137210 + 1270137211.

It is an arithmetic number, because the mean of its divisors is an integer number (1270137211).

Almost surely, 2^2540274421 is an apocalyptic number.

It is an amenable number.

2540274421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540274421 is an equidigital number, since it uses as much as digits as its factorization.

2540274421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 2540274421 is about 50401.1351161856. The cubic root of 2540274421 is about 1364.4581248014.

Adding to 2540274421 its reverse (1244720452), we get a palindrome (3784994873).

The spelling of 2540274421 in words is "two billion, five hundred forty million, two hundred seventy-four thousand, four hundred twenty-one".