4240723 has 4 divisors (see below), whose sum is σ = 4245760. Its totient is φ = 4235688.

The previous prime is 4240721. The next prime is 4240729. The reversal of 4240723 is 3270424.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4240723 - 2¹ = 4240721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4240694 and 4240703.

It is not an unprimeable number, because it can be changed into a prime (4240721) 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, 915 + ... + 3052.

It is an arithmetic number, because the mean of its divisors is an integer number (1061440).

Almost surely, 2^4240723 is an apocalyptic number.

4240723 is a deficient number, since it is larger than the sum of its proper divisors (5037).

4240723 is a wasteful number, since it uses less digits than its factorization.

4240723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 4240723 is about 2059.3015806336. The cubic root of 4240723 is about 161.8626458573.

Subtracting from 4240723 its reverse (3270424), we obtain a cube (970299 = 99³).

The spelling of 4240723 in words is "four million, two hundred forty thousand, seven hundred twenty-three".