2142330042421 has 4 divisors (see below), whose sum is σ = 2255084255200. Its totient is φ = 2029575829644.

The previous prime is 2142330042407. The next prime is 2142330042493. The reversal of 2142330042421 is 1242400332412.

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 2142330042421 - 2¹¹ = 2142330040373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142330042421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142330043421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56377106361 + ... + 56377106398.

It is an arithmetic number, because the mean of its divisors is an integer number (563771063800).

Almost surely, 2^{2142330042421} is an apocalyptic number.

It is an amenable number.

2142330042421 is a deficient number, since it is larger than the sum of its proper divisors (112754212779).

2142330042421 is a wasteful number, since it uses less digits than its factorization.

2142330042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112754212778.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2142330042421 its reverse (1242400332412), we get a palindrome (3384730374833).

The spelling of 2142330042421 in words is "two trillion, one hundred forty-two billion, three hundred thirty million, forty-two thousand, four hundred twenty-one".