240031442421021 has 8 divisors (see below), whose sum is σ = 320043875513824. Its totient is φ = 160019985471120.

The previous prime is 240031442420969. The next prime is 240031442421037. The reversal of 240031442421021 is 120124244130042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 240031442421021 - 2²² = 240031438226717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240031442421021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240031442421061) 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, 243461770 + ... + 244445691.

It is an arithmetic number, because the mean of its divisors is an integer number (40005484439228).

Almost surely, 2^{240031442421021} is an apocalyptic number.

It is an amenable number.

240031442421021 is a deficient number, since it is larger than the sum of its proper divisors (80012433092803).

240031442421021 is a wasteful number, since it uses less digits than its factorization.

240031442421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488071451.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 240031442421021 its reverse (120124244130042), we get a palindrome (360155686551063).

The spelling of 240031442421021 in words is "two hundred forty trillion, thirty-one billion, four hundred forty-two million, four hundred twenty-one thousand, twenty-one".