2003243402243 has 4 divisors (see below), whose sum is σ = 2005228778280. Its totient is φ = 2001258026208.

The previous prime is 2003243402239. The next prime is 2003243402249. The reversal of 2003243402243 is 3422043423002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2003243402243 - 2² = 2003243402239 is a prime.

It is a super-4 number, since 4×2003243402243⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003243402249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992686505 + ... + 992688522.

It is an arithmetic number, because the mean of its divisors is an integer number (501307194570).

Almost surely, 2^{2003243402243} is an apocalyptic number.

2003243402243 is a deficient number, since it is larger than the sum of its proper divisors (1985376037).

2003243402243 is a wasteful number, since it uses less digits than its factorization.

2003243402243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985376036.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 2003243402243 its reverse (3422043423002), we get a palindrome (5425286825245).

The spelling of 2003243402243 in words is "two trillion, three billion, two hundred forty-three million, four hundred two thousand, two hundred forty-three".