4240345 has 8 divisors (see below), whose sum is σ = 5112576. Its totient is φ = 3376176.

The previous prime is 4240319. The next prime is 4240381. The reversal of 4240345 is 5430424.

It is a happy number.

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 4240345 - 2⁷ = 4240217 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 3016.

It is an arithmetic number, because the mean of its divisors is an integer number (639072).

Almost surely, 2^4240345 is an apocalyptic number.

It is an amenable number.

4240345 is a deficient number, since it is larger than the sum of its proper divisors (872231).

4240345 is a wasteful number, since it uses less digits than its factorization.

4240345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4240345 is about 2059.2097998990. The cubic root of 4240345 is about 161.8578364653.

Adding to 4240345 its reverse (5430424), we get a palindrome (9670769).

The spelling of 4240345 in words is "four million, two hundred forty thousand, three hundred forty-five".