42111143044421 has 16 divisors (see below), whose sum is σ = 45962955118080. Its totient is φ = 38263254334320.

The previous prime is 42111143044291. The next prime is 42111143044427. The reversal of 42111143044421 is 12444034111124.

It is a cyclic number.

It is not a de Polignac number, because 42111143044421 - 2¹⁰ = 42111143043397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42111143044427) 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, 442561376 + ... + 442656518.

It is an arithmetic number, because the mean of its divisors is an integer number (2872684694880).

Almost surely, 2^{42111143044421} is an apocalyptic number.

It is an amenable number.

42111143044421 is a deficient number, since it is larger than the sum of its proper divisors (3851812073659).

42111143044421 is a wasteful number, since it uses less digits than its factorization.

42111143044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115336.

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 42111143044421 its reverse (12444034111124), we get a palindrome (54555177155545).

The spelling of 42111143044421 in words is "forty-two trillion, one hundred eleven billion, one hundred forty-three million, forty-four thousand, four hundred twenty-one".