2003042345 has 4 divisors (see below), whose sum is σ = 2403650820. Its totient is φ = 1602433872.

The previous prime is 2003042333. The next prime is 2003042347. The reversal of 2003042345 is 5432403002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 458473744 + 1544568601 = 21412^2 + 39301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003042345 - 2⁴ = 2003042329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2003042345.

It is not an unprimeable number, because it can be changed into a prime (2003042347) 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, 200304230 + ... + 200304239.

It is an arithmetic number, because the mean of its divisors is an integer number (600912705).

Almost surely, 2^2003042345 is an apocalyptic number.

It is an amenable number.

2003042345 is a deficient number, since it is larger than the sum of its proper divisors (400608475).

2003042345 is an equidigital number, since it uses as much as digits as its factorization.

2003042345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400608474.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 2003042345 is about 44755.3610755181. The cubic root of 2003042345 is about 1260.5595786512.

Adding to 2003042345 its reverse (5432403002), we get a palindrome (7435445347).

The spelling of 2003042345 in words is "two billion, three million, forty-two thousand, three hundred forty-five".