3205423421 has 2 divisors, whose sum is σ = 3205423422. Its totient is φ = 3205423420.

The previous prime is 3205423409. The next prime is 3205423471. The reversal of 3205423421 is 1243245023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2212291225 + 993132196 = 47035^2 + 31514^2 .

It is a cyclic number.

It is not a de Polignac number, because 3205423421 - 2³⁰ = 2131681597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3205423471) 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 as a sum of consecutive naturals, namely, 1602711710 + 1602711711.

It is an arithmetic number, because the mean of its divisors is an integer number (1602711711).

Almost surely, 2^3205423421 is an apocalyptic number.

It is an amenable number.

3205423421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3205423421 is an equidigital number, since it uses as much as digits as its factorization.

3205423421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 3205423421 is about 56616.4589231789. The cubic root of 3205423421 is about 1474.4446318264. Note that the first 3 decimals are identical.

Adding to 3205423421 its reverse (1243245023), we get a palindrome (4448668444).

The spelling of 3205423421 in words is "three billion, two hundred five million, four hundred twenty-three thousand, four hundred twenty-one".