12013243 has 12 divisors (see below), whose sum is σ = 13348944. Its totient is φ = 10802000.

The previous prime is 12013229. The next prime is 12013259. The reversal of 12013243 is 34231021.

It is a happy number.

It is not a de Polignac number, because 12013243 - 2¹³ = 12005051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11730 + ... + 12712.

It is an arithmetic number, because the mean of its divisors is an integer number (1112412).

Almost surely, 2^12013243 is an apocalyptic number.

12013243 is a deficient number, since it is larger than the sum of its proper divisors (1335701).

12013243 is a wasteful number, since it uses less digits than its factorization.

12013243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12013243 is about 3466.0125504678. The cubic root of 12013243 is about 229.0270367193.

Adding to 12013243 its reverse (34231021), we get a palindrome (46244264).

It can be divided in two parts, 1201 and 3243, that added together give a palindrome (4444).

The spelling of 12013243 in words is "twelve million, thirteen thousand, two hundred forty-three".