12120142243 has 8 divisors (see below), whose sum is σ = 13250910960. Its totient is φ = 10994196480.

The previous prime is 12120142217. The next prime is 12120142247. The reversal of 12120142243 is 34224102121.

12120142243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120142243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120142247) 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 7 ways as a sum of consecutive naturals, for example, 1200478 + ... + 1210531.

It is an arithmetic number, because the mean of its divisors is an integer number (1656363870).

Almost surely, 2^12120142243 is an apocalyptic number.

12120142243 is a deficient number, since it is larger than the sum of its proper divisors (1130768717).

12120142243 is a wasteful number, since it uses less digits than its factorization.

12120142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411477.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12120142243 its reverse (34224102121), we get a palindrome (46344244364).

The spelling of 12120142243 in words is "twelve billion, one hundred twenty million, one hundred forty-two thousand, two hundred forty-three".