4240145 has 16 divisors (see below), whose sum is σ = 6263040. Its totient is φ = 2683584.

The previous prime is 4240139. The next prime is 4240147. The reversal of 4240145 is 5410424.

It is a cyclic number.

It is not a de Polignac number, because 4240145 - 2¹⁰ = 4239121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4240147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4205 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (391440).

Almost surely, 2^4240145 is an apocalyptic number.

It is an amenable number.

4240145 is a deficient number, since it is larger than the sum of its proper divisors (2022895).

4240145 is a wasteful number, since it uses less digits than its factorization.

4240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4240145 is about 2059.1612370089. The cubic root of 4240145 is about 161.8552916978.

Adding to 4240145 its reverse (5410424), we get a palindrome (9650569).

The spelling of 4240145 in words is "four million, two hundred forty thousand, one hundred forty-five".