42042440443321 has 4 divisors (see below), whose sum is σ = 42042681732352. Its totient is φ = 42042199154292.

The previous prime is 42042440443307. The next prime is 42042440443369. The reversal of 42042440443321 is 12334404424024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42042440443321 - 2⁹ = 42042440442809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42042440443391) 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, 120382965 + ... + 120731698.

It is an arithmetic number, because the mean of its divisors is an integer number (10510670433088).

Almost surely, 2^{42042440443321} is an apocalyptic number.

It is an amenable number.

42042440443321 is a deficient number, since it is larger than the sum of its proper divisors (241289031).

42042440443321 is a wasteful number, since it uses less digits than its factorization.

42042440443321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241289030.

The product of its (nonzero) digits is 294912, while the sum is 37.

Adding to 42042440443321 its reverse (12334404424024), we get a palindrome (54376844867345).

The spelling of 42042440443321 in words is "forty-two trillion, forty-two billion, four hundred forty million, four hundred forty-three thousand, three hundred twenty-one".