3420005 has 8 divisors (see below), whose sum is σ = 4199712. Its totient is φ = 2672208.

The previous prime is 3419963. The next prime is 3420023. The reversal of 3420005 is 5000243.

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

It is a cyclic number.

It is not a de Polignac number, because 3420005 - 2¹⁰ = 3418981 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7739 + ... + 8168.

It is an arithmetic number, because the mean of its divisors is an integer number (524964).

Almost surely, 2^3420005 is an apocalyptic number.

It is an amenable number.

3420005 is a deficient number, since it is larger than the sum of its proper divisors (779707).

3420005 is a wasteful number, since it uses less digits than its factorization.

3420005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15955.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 3420005 is about 1849.3255527354. The cubic root of 3420005 is about 150.6637988812.

Adding to 3420005 its reverse (5000243), we get a palindrome (8420248).

The spelling of 3420005 in words is "three million, four hundred twenty thousand, five".