42432222421 has 8 divisors (see below), whose sum is σ = 43355900160. Its totient is φ = 41509414128.

The previous prime is 42432222401. The next prime is 42432222457. The reversal of 42432222421 is 12422223424.

It is a happy number.

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

It is not a de Polignac number, because 42432222421 - 2⁵ = 42432222389 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 42432222421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42432222401) 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, 118206 + ... + 314383.

It is an arithmetic number, because the mean of its divisors is an integer number (5419487520).

Almost surely, 2^42432222421 is an apocalyptic number.

It is an amenable number.

42432222421 is a deficient number, since it is larger than the sum of its proper divisors (923677739).

42432222421 is a wasteful number, since it uses less digits than its factorization.

42432222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434723.

The product of its digits is 12288, while the sum is 28.

Adding to 42432222421 its reverse (12422223424), we get a palindrome (54854445845).

The spelling of 42432222421 in words is "forty-two billion, four hundred thirty-two million, two hundred twenty-two thousand, four hundred twenty-one".