2340405 has 12 divisors (see below), whose sum is σ = 4056780. Its totient is φ = 1248192.

The previous prime is 2340397. The next prime is 2340419. The reversal of 2340405 is 5040432.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1830609 + 509796 = 1353^2 + 714^2 .

It is not a de Polignac number, because 2340405 - 2³ = 2340397 is a prime.

It is a Curzon number.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25960 + ... + 26049.

It is an arithmetic number, because the mean of its divisors is an integer number (338065).

2^2340405 is an apocalyptic number.

It is an amenable number.

2340405 is a deficient number, since it is larger than the sum of its proper divisors (1716375).

2340405 is a wasteful number, since it uses less digits than its factorization.

2340405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52020 (or 52017 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2340405 is about 1529.8382267416. The cubic root of 2340405 is about 132.7690982981.

Adding to 2340405 its reverse (5040432), we get a palindrome (7380837).

The spelling of 2340405 in words is "two million, three hundred forty thousand, four hundred five".