42341223421 has 4 divisors (see below), whose sum is σ = 48389969632. Its totient is φ = 36292477212.

The previous prime is 42341223413. The next prime is 42341223473. The reversal of 42341223421 is 12432214324.

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 42341223421 - 2³ = 42341223413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42341223421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42341223401) 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, 3024373095 + ... + 3024373108.

It is an arithmetic number, because the mean of its divisors is an integer number (12097492408).

Almost surely, 2^42341223421 is an apocalyptic number.

It is an amenable number.

42341223421 is a deficient number, since it is larger than the sum of its proper divisors (6048746211).

42341223421 is an equidigital number, since it uses as much as digits as its factorization.

42341223421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048746210.

The product of its digits is 9216, while the sum is 28.

Adding to 42341223421 its reverse (12432214324), we get a palindrome (54773437745).

The spelling of 42341223421 in words is "forty-two billion, three hundred forty-one million, two hundred twenty-three thousand, four hundred twenty-one".