42243121212141 has 16 divisors (see below), whose sum is σ = 57097946722176. Its totient is φ = 27775218272256.

The previous prime is 42243121212137. The next prime is 42243121212191. The reversal of 42243121212141 is 14121212134224.

It is a happy number.

It is not a de Polignac number, because 42243121212141 - 2² = 42243121212137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42243121212099 and 42243121212108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243121212191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1909456 + ... + 9387878.

It is an arithmetic number, because the mean of its divisors is an integer number (3568621670136).

Almost surely, 2^{42243121212141} is an apocalyptic number.

It is an amenable number.

42243121212141 is a deficient number, since it is larger than the sum of its proper divisors (14854825510035).

42243121212141 is a wasteful number, since it uses less digits than its factorization.

42243121212141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504292.

The product of its digits is 6144, while the sum is 30.

Adding to 42243121212141 its reverse (14121212134224), we get a palindrome (56364333346365).

The spelling of 42243121212141 in words is "forty-two trillion, two hundred forty-three billion, one hundred twenty-one million, two hundred twelve thousand, one hundred forty-one".