242421220422 has 24 divisors (see below), whose sum is σ = 526596239520. Its totient is φ = 80599340880.

The previous prime is 242421220421. The next prime is 242421220427. The reversal of 242421220422 is 224022124242.

242421220422 is a `hidden beast` number, since 2 + 4 + 2 + 4 + 212 + 20 + 422 = 666.

It is a super-2 number, since 2×242421220422² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242421220421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17303854 + ... + 17317857.

It is an arithmetic number, because the mean of its divisors is an integer number (21941509980).

Almost surely, 2^242421220422 is an apocalyptic number.

242421220422 is an abundant number, since it is smaller than the sum of its proper divisors (284175019098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242421220422 is a wasteful number, since it uses less digits than its factorization.

242421220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34622108 (or 34622105 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 242421220422 its reverse (224022124242), we get a palindrome (466443344664).

The spelling of 242421220422 in words is "two hundred forty-two billion, four hundred twenty-one million, two hundred twenty thousand, four hundred twenty-two".