4013023 has 4 divisors (see below), whose sum is σ = 4586320. Its totient is φ = 3439728.

The previous prime is 4013021. The next prime is 4013027. The reversal of 4013023 is 3203104.

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 4013023 - 2¹ = 4013021 is a prime.

It is a super-2 number, since 2×4013023² = 32208707197058, which contains 22 as substring.

It is a Duffinian number.

4013023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4012994 and 4013012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286638 + ... + 286651.

It is an arithmetic number, because the mean of its divisors is an integer number (1146580).

Almost surely, 2^4013023 is an apocalyptic number.

4013023 is a deficient number, since it is larger than the sum of its proper divisors (573297).

4013023 is an equidigital number, since it uses as much as digits as its factorization.

4013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573296.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 4013023 is about 2003.2531043281. The cubic root of 4013023 is about 158.9121912745.

Adding to 4013023 its reverse (3203104), we get a palindrome (7216127).

The spelling of 4013023 in words is "four million, thirteen thousand, twenty-three".