240204241021 has 4 divisors (see below), whose sum is σ = 240221306592. Its totient is φ = 240187175452.

The previous prime is 240204241007. The next prime is 240204241037. The reversal of 240204241021 is 120142402042.

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 240204241021 - 2¹⁹ = 240203716733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240204240983 and 240204241001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240204241421) 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, 8511655 + ... + 8539828.

It is an arithmetic number, because the mean of its divisors is an integer number (60055326648).

Almost surely, 2^240204241021 is an apocalyptic number.

It is an amenable number.

240204241021 is a deficient number, since it is larger than the sum of its proper divisors (17065571).

240204241021 is a wasteful number, since it uses less digits than its factorization.

240204241021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17065570.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 240204241021 its reverse (120142402042), we get a palindrome (360346643063).

The spelling of 240204241021 in words is "two hundred forty billion, two hundred four million, two hundred forty-one thousand, twenty-one".