3240145 has 4 divisors (see below), whose sum is σ = 3888180. Its totient is φ = 2592112.

The previous prime is 3240143. The next prime is 3240161. The reversal of 3240145 is 5410423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410423 = 457 ⋅11839.

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 654481 = 1608^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240145 - 2¹ = 3240143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3240143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324010 + ... + 324019.

It is an arithmetic number, because the mean of its divisors is an integer number (972045).

Almost surely, 2^3240145 is an apocalyptic number.

It is an amenable number.

3240145 is a deficient number, since it is larger than the sum of its proper divisors (648035).

3240145 is an equidigital number, since it uses as much as digits as its factorization.

3240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648034.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3240145 is about 1800.0402773271. The cubic root of 3240145 is about 147.9749318389.

Adding to 3240145 its reverse (5410423), we get a palindrome (8650568).

The spelling of 3240145 in words is "three million, two hundred forty thousand, one hundred forty-five".