42303040031221 has 4 divisors (see below), whose sum is σ = 42677403217452. Its totient is φ = 41928676844992.

The previous prime is 42303040031201. The next prime is 42303040031243. The reversal of 42303040031221 is 12213004030324.

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 6887317896900 + 35415722134321 = 2624370^2 + 5951111^2 .

It is a cyclic number.

It is not a de Polignac number, because 42303040031221 - 2¹³ = 42303040023029 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 (42303040031201) 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, 187181592946 + ... + 187181593171.

It is an arithmetic number, because the mean of its divisors is an integer number (10669350804363).

Almost surely, 2^{42303040031221} is an apocalyptic number.

It is an amenable number.

42303040031221 is a deficient number, since it is larger than the sum of its proper divisors (374363186231).

42303040031221 is a wasteful number, since it uses less digits than its factorization.

42303040031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374363186230.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 42303040031221 its reverse (12213004030324), we get a palindrome (54516044061545).

The spelling of 42303040031221 in words is "forty-two trillion, three hundred three billion, forty million, thirty-one thousand, two hundred twenty-one".