3420505 has 8 divisors (see below), whose sum is σ = 4477824. Its totient is φ = 2487600.

The previous prime is 3420499. The next prime is 3420517. The reversal of 3420505 is 5050243.

It is a happy number.

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

It is not a de Polignac number, because 3420505 - 2³ = 3420497 is a prime.

It is a Duffinian 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, 31041 + ... + 31150.

It is an arithmetic number, because the mean of its divisors is an integer number (559728).

Almost surely, 2^3420505 is an apocalyptic number.

It is an amenable number.

3420505 is a deficient number, since it is larger than the sum of its proper divisors (1057319).

3420505 is a wasteful number, since it uses less digits than its factorization.

3420505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62207.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 3420505 is about 1849.4607322136. The cubic root of 3420505 is about 150.6711408031.

Adding to 3420505 its reverse (5050243), we get a palindrome (8470748).

The spelling of 3420505 in words is "three million, four hundred twenty thousand, five hundred five".