3420215 has 8 divisors (see below), whose sum is σ = 4282848. Its totient is φ = 2617120.

The previous prime is 3420211. The next prime is 3420227. The reversal of 3420215 is 5120243.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3420215 - 2² = 3420211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3420193 and 3420202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14756 + ... + 14985.

It is an arithmetic number, because the mean of its divisors is an integer number (535356).

Almost surely, 2^3420215 is an apocalyptic number.

3420215 is a deficient number, since it is larger than the sum of its proper divisors (862633).

3420215 is a wasteful number, since it uses less digits than its factorization.

3420215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29769.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3420215 is about 1849.3823293197. The cubic root of 3420215 is about 150.6668825755. Note that the first 3 decimals are identical.

Adding to 3420215 its reverse (5120243), we get a palindrome (8540458).

The spelling of 3420215 in words is "three million, four hundred twenty thousand, two hundred fifteen".