2402243405 has 4 divisors (see below), whose sum is σ = 2882692092. Its totient is φ = 1921794720.

The previous prime is 2402243399. The next prime is 2402243407. The reversal of 2402243405 is 5043422042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5043422042 = 2 ⋅2521711021.

It can be written as a sum of positive squares in 2 ways, for example, as 521026276 + 1881217129 = 22826^2 + 43373^2 .

It is not a de Polignac number, because 2402243405 - 2⁸ = 2402243149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402243407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240224336 + ... + 240224345.

It is an arithmetic number, because the mean of its divisors is an integer number (720673023).

Almost surely, 2^2402243405 is an apocalyptic number.

It is an amenable number.

2402243405 is a deficient number, since it is larger than the sum of its proper divisors (480448687).

2402243405 is an equidigital number, since it uses as much as digits as its factorization.

2402243405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480448686.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2402243405 is about 49012.6861638903. The cubic root of 2402243405 is about 1339.2829394784.

Adding to 2402243405 its reverse (5043422042), we get a palindrome (7445665447).

The spelling of 2402243405 in words is "two billion, four hundred two million, two hundred forty-three thousand, four hundred five".