121430011442 has 4 divisors (see below), whose sum is σ = 182145017166. Its totient is φ = 60715005720.

The previous prime is 121430011429. The next prime is 121430011447. The reversal of 121430011442 is 244110034121.

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

It can be written as a sum of positive squares in only one way, i.e., 110004325561 + 11425685881 = 331669^2 + 106891^2 .

It is not an unprimeable number, because it can be changed into a prime (121430011447) 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 as a sum of consecutive naturals, namely, 30357502859 + ... + 30357502862.

Almost surely, 2^121430011442 is an apocalyptic number.

121430011442 is a deficient number, since it is larger than the sum of its proper divisors (60715005724).

121430011442 is an equidigital number, since it uses as much as digits as its factorization.

121430011442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60715005723.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121430011442 its reverse (244110034121), we get a palindrome (365540045563).

The spelling of 121430011442 in words is "one hundred twenty-one billion, four hundred thirty million, eleven thousand, four hundred forty-two".