42032232402221 has 4 divisors (see below), whose sum is σ = 42032357330844. Its totient is φ = 42032107473600.

The previous prime is 42032232402163. The next prime is 42032232402227. The reversal of 42032232402221 is 12220423223024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31663252794121 + 10368979608100 = 5627011^2 + 3220090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42032232402221 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 (42032232402227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61958270 + ... + 62632991.

It is an arithmetic number, because the mean of its divisors is an integer number (10508089332711).

Almost surely, 2^{42032232402221} is an apocalyptic number.

It is an amenable number.

42032232402221 is a deficient number, since it is larger than the sum of its proper divisors (124928623).

42032232402221 is a wasteful number, since it uses less digits than its factorization.

42032232402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124928622.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 42032232402221 its reverse (12220423223024), we get a palindrome (54252655625245).

The spelling of 42032232402221 in words is "forty-two trillion, thirty-two billion, two hundred thirty-two million, four hundred two thousand, two hundred twenty-one".