242203422421 has 4 divisors (see below), whose sum is σ = 243689333152. Its totient is φ = 240717511692.

The previous prime is 242203422407. The next prime is 242203422473. The reversal of 242203422421 is 124224302242.

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 242203422421 - 2¹¹ = 242203420373 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 242203422421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242203422481) 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, 742955121 + ... + 742955446.

It is an arithmetic number, because the mean of its divisors is an integer number (60922333288).

Almost surely, 2^242203422421 is an apocalyptic number.

It is an amenable number.

242203422421 is a deficient number, since it is larger than the sum of its proper divisors (1485910731).

242203422421 is a wasteful number, since it uses less digits than its factorization.

242203422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485910730.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 242203422421 its reverse (124224302242), we get a palindrome (366427724663).

The spelling of 242203422421 in words is "two hundred forty-two billion, two hundred three million, four hundred twenty-two thousand, four hundred twenty-one".