2540034421 has 2 divisors, whose sum is σ = 2540034422. Its totient is φ = 2540034420.

The previous prime is 2540034407. The next prime is 2540034451. The reversal of 2540034421 is 1244300452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2366822500 + 173211921 = 48650^2 + 13161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540034421 - 2⁷ = 2540034293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540034451) by changing a digit.

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 as a sum of consecutive naturals, namely, 1270017210 + 1270017211.

It is an arithmetic number, because the mean of its divisors is an integer number (1270017211).

Almost surely, 2^2540034421 is an apocalyptic number.

It is an amenable number.

2540034421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540034421 is an equidigital number, since it uses as much as digits as its factorization.

2540034421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2540034421 is about 50398.7541611893. The cubic root of 2540034421 is about 1364.4151530316.

Adding to 2540034421 its reverse (1244300452), we get a palindrome (3784334873).

The spelling of 2540034421 in words is "two billion, five hundred forty million, thirty-four thousand, four hundred twenty-one".