242421023420 has 24 divisors (see below), whose sum is σ = 509094558000. Its totient is φ = 96966426752.

The previous prime is 242421023419. The next prime is 242421023423. The reversal of 242421023420 is 24320124242.

242421023420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 242421023420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242421023423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250591 + ... + 1431369.

It is an arithmetic number, because the mean of its divisors is an integer number (21212273250).

Almost surely, 2^242421023420 is an apocalyptic number.

242421023420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242421023420 is an abundant number, since it is smaller than the sum of its proper divisors (266673534580).

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

242421023420 is a wasteful number, since it uses less digits than its factorization.

242421023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247837 (or 247835 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 242421023420 its reverse (24320124242), we get a palindrome (266741147662).

The spelling of 242421023420 in words is "two hundred forty-two billion, four hundred twenty-one million, twenty-three thousand, four hundred twenty".