3120505 has 8 divisors (see below), whose sum is σ = 3759624. Its totient is φ = 2486400.

The previous prime is 3120499. The next prime is 3120527. The reversal of 3120505 is 5050213.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 2396304 = 851^2 + 1548^2 .

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

It is not a de Polignac number, because 3120505 - 2³ = 3120497 is a prime.

It is an Ulam number.

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, 295 + ... + 2515.

It is an arithmetic number, because the mean of its divisors is an integer number (469953).

Almost surely, 2^3120505 is an apocalyptic number.

It is an amenable number.

3120505 is a deficient number, since it is larger than the sum of its proper divisors (639119).

3120505 is a wasteful number, since it uses less digits than its factorization.

3120505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 3120505 is about 1766.4951174572. The cubic root of 3120505 is about 146.1307548220.

Adding to 3120505 its reverse (5050213), we get a palindrome (8170718).

The spelling of 3120505 in words is "three million, one hundred twenty thousand, five hundred five".