121204144342 has 4 divisors (see below), whose sum is σ = 181806216516. Its totient is φ = 60602072170.

The previous prime is 121204144339. The next prime is 121204144357. The reversal of 121204144342 is 243441402121.

121204144342 is digitally balanced in base 3, 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 a super-2 number, since 2×121204144342² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121204144342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30301036084 + ... + 30301036087.

It is an arithmetic number, because the mean of its divisors is an integer number (45451554129).

Almost surely, 2^121204144342 is an apocalyptic number.

121204144342 is a deficient number, since it is larger than the sum of its proper divisors (60602072174).

121204144342 is an equidigital number, since it uses as much as digits as its factorization.

121204144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60602072173.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 121204144342 its reverse (243441402121), we get a palindrome (364645546463).

The spelling of 121204144342 in words is "one hundred twenty-one billion, two hundred four million, one hundred forty-four thousand, three hundred forty-two".