42441324242221 has 4 divisors (see below), whose sum is σ = 42547162956444. Its totient is φ = 42335485528000.

The previous prime is 42441324242201. The next prime is 42441324242243. The reversal of 42441324242221 is 12224242314424.

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 35012238088996 + 7429086153225 = 5917114^2 + 2725635^2 .

It is a cyclic number.

It is not a de Polignac number, because 42441324242221 - 2⁵ = 42441324242189 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 (42441324242201) 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, 52919356510 + ... + 52919357311.

It is an arithmetic number, because the mean of its divisors is an integer number (10636790739111).

Almost surely, 2^{42441324242221} is an apocalyptic number.

It is an amenable number.

42441324242221 is a deficient number, since it is larger than the sum of its proper divisors (105838714223).

42441324242221 is a wasteful number, since it uses less digits than its factorization.

42441324242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105838714222.

The product of its digits is 196608, while the sum is 37.

Adding to 42441324242221 its reverse (12224242314424), we get a palindrome (54665566556645).

The spelling of 42441324242221 in words is "forty-two trillion, four hundred forty-one billion, three hundred twenty-four million, two hundred forty-two thousand, two hundred twenty-one".