42432120312221 has 8 divisors (see below), whose sum is σ = 42601748152320. Its totient is φ = 42262580529072.

The previous prime is 42432120312217. The next prime is 42432120312277. The reversal of 42432120312221 is 12221302123424.

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

It is a cyclic number.

It is not a de Polignac number, because 42432120312221 - 2² = 42432120312217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42432120312721) 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, 21048485 + ... + 22976138.

It is an arithmetic number, because the mean of its divisors is an integer number (5325218519040).

Almost surely, 2^{42432120312221} is an apocalyptic number.

It is an amenable number.

42432120312221 is a deficient number, since it is larger than the sum of its proper divisors (169627840099).

42432120312221 is a wasteful number, since it uses less digits than its factorization.

42432120312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44028475.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 42432120312221 its reverse (12221302123424), we get a palindrome (54653422435645).

It can be divided in two parts, 424321203 and 12221, that added together give a palindrome (424333424).

The spelling of 42432120312221 in words is "forty-two trillion, four hundred thirty-two billion, one hundred twenty million, three hundred twelve thousand, two hundred twenty-one".