2540423 has 2 divisors, whose sum is σ = 2540424. Its totient is φ = 2540422.

The previous prime is 2540413. The next prime is 2540431. The reversal of 2540423 is 3240452.

2540423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2540423 - 2⁴ = 2540407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2540395 and 2540404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270211 + 1270212.

It is an arithmetic number, because the mean of its divisors is an integer number (1270212).

2^2540423 is an apocalyptic number.

2540423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540423 is an equidigital number, since it uses as much as digits as its factorization.

2540423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 2540423 is about 1593.8704464291. The cubic root of 2540423 is about 136.4484726372.

Adding to 2540423 its reverse (3240452), we get a palindrome (5780875).

The spelling of 2540423 in words is "two million, five hundred forty thousand, four hundred twenty-three".