121243434141442 has 8 divisors (see below), whose sum is σ = 182980888336656. Its totient is φ = 60249804695892.

The previous prime is 121243434141301. The next prime is 121243434141457. The reversal of 121243434141442 is 244141434342121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 121243434141395 and 121243434141404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185956187008 + ... + 185956187659.

It is an arithmetic number, because the mean of its divisors is an integer number (22872611042082).

Almost surely, 2^{121243434141442} is an apocalyptic number.

121243434141442 is a deficient number, since it is larger than the sum of its proper divisors (61737454195214).

121243434141442 is a wasteful number, since it uses less digits than its factorization.

121243434141442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371912374832.

The product of its digits is 294912, while the sum is 40.

Adding to 121243434141442 its reverse (244141434342121), we get a palindrome (365384868483563).

The spelling of 121243434141442 in words is "one hundred twenty-one trillion, two hundred forty-three billion, four hundred thirty-four million, one hundred forty-one thousand, four hundred forty-two".