2740423 has 6 divisors (see below), whose sum is σ = 3187896. Its totient is φ = 2348892.

The previous prime is 2740421. The next prime is 2740453. The reversal of 2740423 is 3240472.

2740423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2740423 - 2¹ = 2740421 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2740394 and 2740403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740421) 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 in 5 ways as a sum of consecutive naturals, for example, 27915 + ... + 28012.

It is an arithmetic number, because the mean of its divisors is an integer number (531316).

2^2740423 is an apocalyptic number.

2740423 is a deficient number, since it is larger than the sum of its proper divisors (447473).

2740423 is an equidigital number, since it uses as much as digits as its factorization.

2740423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55941 (or 55934 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 2740423 is about 1655.4223026165. The cubic root of 2740423 is about 139.9391402140.

Adding to 2740423 its reverse (3240472), we get a palindrome (5980895).

The spelling of 2740423 in words is "two million, seven hundred forty thousand, four hundred twenty-three".