12042121143 has 8 divisors (see below), whose sum is σ = 17291250928. Its totient is φ = 7410536064.

The previous prime is 12042121141. The next prime is 12042121171. The reversal of 12042121143 is 34112124021.

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

It is not a de Polignac number, because 12042121143 - 2¹ = 12042121141 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 (12042121141) 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, 154386130 + ... + 154386207.

It is an arithmetic number, because the mean of its divisors is an integer number (2161406366).

Almost surely, 2^12042121143 is an apocalyptic number.

12042121143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12042121143 is a deficient number, since it is larger than the sum of its proper divisors (5249129785).

12042121143 is a wasteful number, since it uses less digits than its factorization.

12042121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308772353.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12042121143 its reverse (34112124021), we get a palindrome (46154245164).

The spelling of 12042121143 in words is "twelve billion, forty-two million, one hundred twenty-one thousand, one hundred forty-three".