3421420 has 48 divisors (see below), whose sum is σ = 7892640. Its totient is φ = 1240064.

The previous prime is 3421417. The next prime is 3421423. The reversal of 3421420 is 241243.

3421420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3421417) and next prime (3421423).

It is a super-2 number, since 2×3421420² = 23412229632800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3421394 and 3421403.

It is not an unprimeable number, because it can be changed into a prime (3421423) 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 15 ways as a sum of consecutive naturals, for example, 9687 + ... + 10033.

It is an arithmetic number, because the mean of its divisors is an integer number (164430).

Almost surely, 2^3421420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3421420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3946320).

3421420 is an abundant number, since it is smaller than the sum of its proper divisors (4471220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3421420 is a wasteful number, since it uses less digits than its factorization.

3421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 3421420 is about 1849.7080850772. The cubic root of 3421420 is about 150.6845746676.

Adding to 3421420 its reverse (241243), we get a palindrome (3662663).

The spelling of 3421420 in words is "three million, four hundred twenty-one thousand, four hundred twenty".