3421505 has 8 divisors (see below), whose sum is σ = 4347432. Its totient is φ = 2576128.

The previous prime is 3421499. The next prime is 3421513. The reversal of 3421505 is 5051243.

It can be written as a sum of positive squares in 4 ways, for example, as 1324801 + 2096704 = 1151^2 + 1448^2 .

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 3421505 - 2¹⁰ = 3420481 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, 20042 + ... + 20211.

It is an arithmetic number, because the mean of its divisors is an integer number (543429).

Almost surely, 2^3421505 is an apocalyptic number.

It is an amenable number.

3421505 is a deficient number, since it is larger than the sum of its proper divisors (925927).

3421505 is a wasteful number, since it uses less digits than its factorization.

3421505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40275.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 3421505 is about 1849.7310615330. The cubic root of 3421505 is about 150.6858225007.

Adding to 3421505 its reverse (5051243), we get a palindrome (8472748).

The spelling of 3421505 in words is "three million, four hundred twenty-one thousand, five hundred five".