2540114021 has 2 divisors, whose sum is σ = 2540114022. Its totient is φ = 2540114020.

The previous prime is 2540113967. The next prime is 2540114051. The reversal of 2540114021 is 1204110452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2501500225 + 38613796 = 50015^2 + 6214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540114021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2540113984 and 2540114002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540114051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270057010 + 1270057011.

It is an arithmetic number, because the mean of its divisors is an integer number (1270057011).

Almost surely, 2^2540114021 is an apocalyptic number.

It is an amenable number.

2540114021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540114021 is an equidigital number, since it uses as much as digits as its factorization.

2540114021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2540114021 is about 50399.5438570628. The cubic root of 2540114021 is about 1364.4294056352.

Adding to 2540114021 its reverse (1204110452), we get a palindrome (3744224473).

The spelling of 2540114021 in words is "two billion, five hundred forty million, one hundred fourteen thousand, twenty-one".