242120500403 has 4 divisors (see below), whose sum is σ = 245530648368. Its totient is φ = 238710352440.

The previous prime is 242120500399. The next prime is 242120500411. The reversal of 242120500403 is 304005021242.

It is a happy number.

242120500403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 242120500403 - 2² = 242120500399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242120520403) 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 3 ways as a sum of consecutive naturals, for example, 1705073876 + ... + 1705074017.

It is an arithmetic number, because the mean of its divisors is an integer number (61382662092).

Almost surely, 2^242120500403 is an apocalyptic number.

242120500403 is a deficient number, since it is larger than the sum of its proper divisors (3410147965).

242120500403 is an equidigital number, since it uses as much as digits as its factorization.

242120500403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410147964.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 242120500403 its reverse (304005021242), we get a palindrome (546125521645).

The spelling of 242120500403 in words is "two hundred forty-two billion, one hundred twenty million, five hundred thousand, four hundred three".