3120545 has 8 divisors (see below), whose sum is σ = 3873960. Its totient is φ = 2410240.

The previous prime is 3120539. The next prime is 3120547. The reversal of 3120545 is 5450213.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 2768896 = 593^2 + 1664^2 .

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

It is not a de Polignac number, because 3120545 - 2⁴ = 3120529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3120547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10616 + ... + 10905.

It is an arithmetic number, because the mean of its divisors is an integer number (484245).

Almost surely, 2^3120545 is an apocalyptic number.

It is an amenable number.

3120545 is a deficient number, since it is larger than the sum of its proper divisors (753415).

3120545 is a wasteful number, since it uses less digits than its factorization.

3120545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21555.

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

The square root of 3120545 is about 1766.5064392750. The cubic root of 3120545 is about 146.1313792087.

Adding to 3120545 its reverse (5450213), we get a palindrome (8570758).

It can be divided in two parts, 31205 and 45, that multiplied together give a square (1404225 = 1185²).

The spelling of 3120545 in words is "three million, one hundred twenty thousand, five hundred forty-five".