4042013 has 4 divisors (see below), whose sum is σ = 4049280. Its totient is φ = 4034748.

The previous prime is 4042001. The next prime is 4042019. The reversal of 4042013 is 3102404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4042013 - 2⁶ = 4041949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042019) 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, 2723 + ... + 3936.

It is an arithmetic number, because the mean of its divisors is an integer number (1012320).

Almost surely, 2^4042013 is an apocalyptic number.

It is an amenable number.

4042013 is a deficient number, since it is larger than the sum of its proper divisors (7267).

4042013 is an equidigital number, since it uses as much as digits as its factorization.

4042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4042013 is about 2010.4758143285. The cubic root of 4042013 is about 159.2939330381.

Adding to 4042013 its reverse (3102404), we get a palindrome (7144417).

The spelling of 4042013 in words is "four million, forty-two thousand, thirteen".