3402321 has 16 divisors (see below), whose sum is σ = 5099136. Its totient is φ = 2002176.

The previous prime is 3402319. The next prime is 3402323. The reversal of 3402321 is 1232043.

It is an interprime number because it is at equal distance from previous prime (3402319) and next prime (3402323).

It is not a de Polignac number, because 3402321 - 2¹ = 3402319 is a prime.

3402321 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3402321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (318696).

Almost surely, 2^3402321 is an apocalyptic number.

It is an amenable number.

3402321 is a deficient number, since it is larger than the sum of its proper divisors (1696815).

3402321 is a wasteful number, since it uses less digits than its factorization.

3402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3402321 is about 1844.5381535767. The cubic root of 3402321 is about 150.4036682607.

Adding to 3402321 its reverse (1232043), we get a palindrome (4634364).

The spelling of 3402321 in words is "three million, four hundred two thousand, three hundred twenty-one".