242440122021 has 4 divisors (see below), whose sum is σ = 323253496032. Its totient is φ = 161626748012.

The previous prime is 242440122019. The next prime is 242440122109. The reversal of 242440122021 is 120221044242.

It is a happy number.

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 242440122021 - 2¹ = 242440122019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242440121982 and 242440122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242440127021) 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, 40406687001 + ... + 40406687006.

It is an arithmetic number, because the mean of its divisors is an integer number (80813374008).

Almost surely, 2^242440122021 is an apocalyptic number.

It is an amenable number.

242440122021 is a deficient number, since it is larger than the sum of its proper divisors (80813374011).

242440122021 is an equidigital number, since it uses as much as digits as its factorization.

242440122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80813374010.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 242440122021 its reverse (120221044242), we get a palindrome (362661166263).

The spelling of 242440122021 in words is "two hundred forty-two billion, four hundred forty million, one hundred twenty-two thousand, twenty-one".