2540235443 has 2 divisors, whose sum is σ = 2540235444. Its totient is φ = 2540235442.

The previous prime is 2540235433. The next prime is 2540235469. The reversal of 2540235443 is 3445320452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2540235443 - 2⁴ = 2540235427 is a prime.

It is a super-2 number, since 2×2540235443² = 12905592211746812498, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2540235433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270117721 + 1270117722.

It is an arithmetic number, because the mean of its divisors is an integer number (1270117722).

Almost surely, 2^2540235443 is an apocalyptic number.

2540235443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540235443 is an equidigital number, since it uses as much as digits as its factorization.

2540235443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 32.

The square root of 2540235443 is about 50400.7484369032. The cubic root of 2540235443 is about 1364.4511460120.

Adding to 2540235443 its reverse (3445320452), we get a palindrome (5985555895).

The spelling of 2540235443 in words is "two billion, five hundred forty million, two hundred thirty-five thousand, four hundred forty-three".