42203424121 has 4 divisors (see below), whose sum is σ = 42230289744. Its totient is φ = 42176558500.

The previous prime is 42203424091. The next prime is 42203424127. The reversal of 42203424121 is 12142430224.

42203424121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42203424121 - 2²⁹ = 41666553209 is a prime.

It is a super-2 number, since 2×42203424121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42203424127) 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, 13430455 + ... + 13433596.

It is an arithmetic number, because the mean of its divisors is an integer number (10557572436).

Almost surely, 2^42203424121 is an apocalyptic number.

It is an amenable number.

42203424121 is a deficient number, since it is larger than the sum of its proper divisors (26865623).

42203424121 is a wasteful number, since it uses less digits than its factorization.

42203424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26865622.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42203424121 its reverse (12142430224), we get a palindrome (54345854345).

The spelling of 42203424121 in words is "forty-two billion, two hundred three million, four hundred twenty-four thousand, one hundred twenty-one".