12013143 has 8 divisors (see below), whose sum is σ = 16159728. Its totient is φ = 7937664.

The previous prime is 12013117. The next prime is 12013189. The reversal of 12013143 is 34131021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12013143 - 2⁸ = 12012887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17380 + ... + 18057.

It is an arithmetic number, because the mean of its divisors is an integer number (2019966).

Almost surely, 2^12013143 is an apocalyptic number.

12013143 is a deficient number, since it is larger than the sum of its proper divisors (4146585).

12013143 is a wasteful number, since it uses less digits than its factorization.

12013143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35553.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12013143 is about 3465.9981246388. The cubic root of 12013143 is about 229.0264012327.

Adding to 12013143 its reverse (34131021), we get a palindrome (46144164).

The spelling of 12013143 in words is "twelve million, thirteen thousand, one hundred forty-three".