2104032421 has 6 divisors (see below), whose sum is σ = 2235079730. Its totient is φ = 1980265536.

The previous prime is 2104032419. The next prime is 2104032439. The reversal of 2104032421 is 1242304012.

It can be written as a sum of positive squares in 3 ways, for example, as 285948100 + 1818084321 = 16910^2 + 42639^2 .

It is not a de Polignac number, because 2104032421 - 2¹ = 2104032419 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 (2104032461) 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 5 ways as a sum of consecutive naturals, for example, 3639906 + ... + 3640483.

Almost surely, 2^2104032421 is an apocalyptic number.

It is an amenable number.

2104032421 is a deficient number, since it is larger than the sum of its proper divisors (131047309).

2104032421 is an equidigital number, since it uses as much as digits as its factorization.

2104032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280423 (or 7280406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2104032421 is about 45869.7331690517. The cubic root of 2104032421 is about 1281.3982971525.

Adding to 2104032421 its reverse (1242304012), we get a palindrome (3346336433).

The spelling of 2104032421 in words is "two billion, one hundred four million, thirty-two thousand, four hundred twenty-one".