242130004121 has 4 divisors (see below), whose sum is σ = 243094665744. Its totient is φ = 241165342500.

The previous prime is 242130004099. The next prime is 242130004213. The reversal of 242130004121 is 121400031242.

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 242130004121 - 2⁶ = 242130004057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242130004093 and 242130004102.

It is not an unprimeable number, because it can be changed into a prime (242130084121) 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, 482330435 + ... + 482330936.

It is an arithmetic number, because the mean of its divisors is an integer number (60773666436).

Almost surely, 2^242130004121 is an apocalyptic number.

It is an amenable number.

242130004121 is a deficient number, since it is larger than the sum of its proper divisors (964661623).

242130004121 is an equidigital number, since it uses as much as digits as its factorization.

242130004121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964661622.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 242130004121 its reverse (121400031242), we get a palindrome (363530035363).

The spelling of 242130004121 in words is "two hundred forty-two billion, one hundred thirty million, four thousand, one hundred twenty-one".