3206421 has 24 divisors (see below), whose sum is σ = 5166720. Its totient is φ = 1904256.

The previous prime is 3206417. The next prime is 3206429. The reversal of 3206421 is 1246023.

It is a happy number.

3206421 is a `hidden beast` number, since 3 + 20 + 642 + 1 = 666.

3206421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3206421 - 2² = 3206417 is a prime.

It is a super-2 number, since 2×3206421² = 20562271258482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3206394 and 3206403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3206429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2356 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (215280).

Almost surely, 2^3206421 is an apocalyptic number.

It is an amenable number.

3206421 is a deficient number, since it is larger than the sum of its proper divisors (1960299).

3206421 is a wasteful number, since it uses less digits than its factorization.

3206421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3206421 is about 1790.6482066559. The cubic root of 3206421 is about 147.4597572873.

The spelling of 3206421 in words is "three million, two hundred six thousand, four hundred twenty-one".