2042404345 has 4 divisors (see below), whose sum is σ = 2450885220. Its totient is φ = 1633923472.

The previous prime is 2042404321. The next prime is 2042404369. The reversal of 2042404345 is 5434042402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5434042402 = 2 ⋅2717021201.

It is an interprime number because it is at equal distance from previous prime (2042404321) and next prime (2042404369).

It can be written as a sum of positive squares in 2 ways, for example, as 970758649 + 1071645696 = 31157^2 + 32736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042404345 - 2⁹ = 2042403833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204240430 + ... + 204240439.

It is an arithmetic number, because the mean of its divisors is an integer number (612721305).

Almost surely, 2^2042404345 is an apocalyptic number.

It is an amenable number.

2042404345 is a deficient number, since it is larger than the sum of its proper divisors (408480875).

2042404345 is an equidigital number, since it uses as much as digits as its factorization.

2042404345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408480874.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 2042404345 is about 45192.9678711191. The cubic root of 2042404345 is about 1268.7632047612.

Adding to 2042404345 its reverse (5434042402), we get a palindrome (7476446747).

The spelling of 2042404345 in words is "two billion, forty-two million, four hundred four thousand, three hundred forty-five".