4042723 has 8 divisors (see below), whose sum is σ = 4175136. Its totient is φ = 3912000.

The previous prime is 4042721. The next prime is 4042729. The reversal of 4042723 is 3272404.

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 4042723 - 2¹ = 4042721 is a prime.

It is a Duffinian number.

4042723 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4042694 and 4042703.

It is not an unprimeable number, because it can be changed into a prime (4042721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5865 + ... + 6517.

It is an arithmetic number, because the mean of its divisors is an integer number (521892).

Almost surely, 2^4042723 is an apocalyptic number.

4042723 is a deficient number, since it is larger than the sum of its proper divisors (132413).

4042723 is a wasteful number, since it uses less digits than its factorization.

4042723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

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

The square root of 4042723 is about 2010.6523816911. The cubic root of 4042723 is about 159.3032594201.

The spelling of 4042723 in words is "four million, forty-two thousand, seven hundred twenty-three".