40424044242221 has 8 divisors (see below), whose sum is σ = 40763159599680. Its totient is φ = 40086084304288.

The previous prime is 40424044242199. The next prime is 40424044242247. The reversal of 40424044242221 is 12224244042404.

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 40424044242221 - 2¹⁰ = 40424044241197 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 (40424044242121) 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, 288784616 + ... + 288924561.

It is an arithmetic number, because the mean of its divisors is an integer number (5095394949960).

Almost surely, 2^{40424044242221} is an apocalyptic number.

It is an amenable number.

40424044242221 is a deficient number, since it is larger than the sum of its proper divisors (339115357459).

40424044242221 is a wasteful number, since it uses less digits than its factorization.

40424044242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577709763.

The product of its (nonzero) digits is 131072, while the sum is 35.

Adding to 40424044242221 its reverse (12224244042404), we get a palindrome (52648288284625).

The spelling of 40424044242221 in words is "forty trillion, four hundred twenty-four billion, forty-four million, two hundred forty-two thousand, two hundred twenty-one".