42243314421 has 96 divisors (see below), whose sum is σ = 72258027520. Its totient is φ = 21483221760.

The previous prime is 42243314413. The next prime is 42243314459. The reversal of 42243314421 is 12441334224.

It is not a de Polignac number, because 42243314421 - 2³ = 42243314413 is a prime.

It is a super-2 number, since 2×42243314421² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243314401) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25493025 + ... + 25494681.

Almost surely, 2^42243314421 is an apocalyptic number.

It is an amenable number.

42243314421 is a deficient number, since it is larger than the sum of its proper divisors (30014713099).

42243314421 is a wasteful number, since it uses less digits than its factorization.

42243314421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895 (or 1884 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

Adding to 42243314421 its reverse (12441334224), we get a palindrome (54684648645).

The spelling of 42243314421 in words is "forty-two billion, two hundred forty-three million, three hundred fourteen thousand, four hundred twenty-one".