2540342 has 16 divisors (see below), whose sum is σ = 4505760. Its totient is φ = 1051008.

The previous prime is 2540341. The next prime is 2540389. The reversal of 2540342 is 2430452.

2540342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540341) 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 7 ways as a sum of consecutive naturals, for example, 2723 + ... + 3534.

It is an arithmetic number, because the mean of its divisors is an integer number (281610).

2^2540342 is an apocalyptic number.

2540342 is a deficient number, since it is larger than the sum of its proper divisors (1965418).

2540342 is a wasteful number, since it uses less digits than its factorization.

2540342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295.

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

The square root of 2540342 is about 1593.8450363821. The cubic root of 2540342 is about 136.4470224268.

Adding to 2540342 its reverse (2430452), we get a palindrome (4970794).

It can be divided in two parts, 2540 and 342, that added together give a palindrome (2882).

The spelling of 2540342 in words is "two million, five hundred forty thousand, three hundred forty-two".