4240523 has 4 divisors (see below), whose sum is σ = 4846320. Its totient is φ = 3634728.

The previous prime is 4240519. The next prime is 4240541. The reversal of 4240523 is 3250424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4240523 - 2² = 4240519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4240495 and 4240504.

It is not an unprimeable number, because it can be changed into a prime (4240513) 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, 302888 + ... + 302901.

It is an arithmetic number, because the mean of its divisors is an integer number (1211580).

Almost surely, 2^4240523 is an apocalyptic number.

4240523 is a deficient number, since it is larger than the sum of its proper divisors (605797).

4240523 is an equidigital number, since it uses as much as digits as its factorization.

4240523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605796.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4240523 is about 2059.2530199079. The cubic root of 4240523 is about 161.8601012410.

Adding to 4240523 its reverse (3250424), we get a palindrome (7490947).

Subtracting from 4240523 its reverse (3250424), we obtain a palindrome (990099).

The spelling of 4240523 in words is "four million, two hundred forty thousand, five hundred twenty-three".