3421402321 has 4 divisors (see below), whose sum is σ = 3513872692. Its totient is φ = 3328931952.

The previous prime is 3421402319. The next prime is 3421402351. The reversal of 3421402321 is 1232041243.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2444214721 + 977187600 = 49439^2 + 31260^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421402321 - 2¹ = 3421402319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3421402292 and 3421402301.

It is not an unprimeable number, because it can be changed into a prime (3421402301) 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, 46235130 + ... + 46235203.

It is an arithmetic number, because the mean of its divisors is an integer number (878468173).

Almost surely, 2^3421402321 is an apocalyptic number.

It is an amenable number.

3421402321 is a deficient number, since it is larger than the sum of its proper divisors (92470371).

3421402321 is an equidigital number, since it uses as much as digits as its factorization.

3421402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92470370.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3421402321 is about 58492.7544316388. The cubic root of 3421402321 is about 1506.8431513044.

Adding to 3421402321 its reverse (1232041243), we get a palindrome (4653443564).

The spelling of 3421402321 in words is "three billion, four hundred twenty-one million, four hundred two thousand, three hundred twenty-one".