2043504421 has 8 divisors (see below), whose sum is σ = 2341260864. Its totient is φ = 1747204800.

The previous prime is 2043504389. The next prime is 2043504439. The reversal of 2043504421 is 1244053402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2043504421 - 2⁵ = 2043504389 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 (2043504121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361195 + ... + 366808.

It is an arithmetic number, because the mean of its divisors is an integer number (292657608).

Almost surely, 2^2043504421 is an apocalyptic number.

It is an amenable number.

2043504421 is a deficient number, since it is larger than the sum of its proper divisors (297756443).

2043504421 is an equidigital number, since it uses as much as digits as its factorization.

2043504421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728411.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2043504421 is about 45205.1371085190. The cubic root of 2043504421 is about 1268.9909568287.

Adding to 2043504421 its reverse (1244053402), we get a palindrome (3287557823).

The spelling of 2043504421 in words is "two billion, forty-three million, five hundred four thousand, four hundred twenty-one".