42111144121 has 8 divisors (see below), whose sum is σ = 42536203200. Its totient is φ = 41686244400.

The previous prime is 42111144109. The next prime is 42111144137. The reversal of 42111144121 is 12144111124.

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

It is a cyclic number.

It is not a de Polignac number, because 42111144121 - 2⁹ = 42111143609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42111144092 and 42111144101.

It is not an unprimeable number, because it can be changed into a prime (42111444121) 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, 532570 + ... + 606508.

It is an arithmetic number, because the mean of its divisors is an integer number (5317025400).

Almost surely, 2^42111144121 is an apocalyptic number.

It is an amenable number.

42111144121 is a deficient number, since it is larger than the sum of its proper divisors (425059079).

42111144121 is a wasteful number, since it uses less digits than its factorization.

42111144121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79679.

The product of its digits is 256, while the sum is 22.

Adding to 42111144121 its reverse (12144111124), we get a palindrome (54255255245).

The spelling of 42111144121 in words is "forty-two billion, one hundred eleven million, one hundred forty-four thousand, one hundred twenty-one".