4030023 has 4 divisors (see below), whose sum is σ = 5373368. Its totient is φ = 2686680.

The previous prime is 4030007. The next prime is 4030051. The reversal of 4030023 is 3200304.

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

It is not a de Polignac number, because 4030023 - 2⁴ = 4030007 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4029990 and 4030008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030063) 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, 671668 + ... + 671673.

It is an arithmetic number, because the mean of its divisors is an integer number (1343342).

Almost surely, 2^4030023 is an apocalyptic number.

4030023 is a deficient number, since it is larger than the sum of its proper divisors (1343345).

4030023 is a wasteful number, since it uses less digits than its factorization.

4030023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343344.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 4030023 is about 2007.4917185383. The cubic root of 4030023 is about 159.1362701869.

Adding to 4030023 its reverse (3200304), we get a palindrome (7230327).

The spelling of 4030023 in words is "four million, thirty thousand, twenty-three".