12042013 has 4 divisors (see below), whose sum is σ = 12136960. Its totient is φ = 11947068.

The previous prime is 12041999. The next prime is 12042053. The reversal of 12042013 is 31024021.

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 12042013 - 2⁹ = 12041501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12041984 and 12042002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042053) 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, 47283 + ... + 47536.

It is an arithmetic number, because the mean of its divisors is an integer number (3034240).

Almost surely, 2^12042013 is an apocalyptic number.

It is an amenable number.

12042013 is a deficient number, since it is larger than the sum of its proper divisors (94947).

12042013 is an equidigital number, since it uses as much as digits as its factorization.

12042013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94946.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12042013 is about 3470.1603709339. The cubic root of 12042013 is about 229.2097199699.

Adding to 12042013 its reverse (31024021), we get a palindrome (43066034).

The spelling of 12042013 in words is "twelve million, forty-two thousand, thirteen".