2003205401 has 4 divisors (see below), whose sum is σ = 2090301312. Its totient is φ = 1916109492.

The previous prime is 2003205371. The next prime is 2003205409. The reversal of 2003205401 is 1045023002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1045023002 = 2 ⋅522511501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003205401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2003205401.

It is not an unprimeable number, because it can be changed into a prime (2003205409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43547921 + ... + 43547966.

It is an arithmetic number, because the mean of its divisors is an integer number (522575328).

Almost surely, 2^2003205401 is an apocalyptic number.

It is an amenable number.

2003205401 is a deficient number, since it is larger than the sum of its proper divisors (87095911).

2003205401 is an equidigital number, since it uses as much as digits as its factorization.

2003205401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87095910.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2003205401 is about 44757.1826749629. The cubic root of 2003205401 is about 1260.5937826586.

Adding to 2003205401 its reverse (1045023002), we get a palindrome (3048228403).

The spelling of 2003205401 in words is "two billion, three million, two hundred five thousand, four hundred one".