121341450142 has 24 divisors (see below), whose sum is σ = 200105841600. Its totient is φ = 55143385440.

The previous prime is 121341450121. The next prime is 121341450151. The reversal of 121341450142 is 241054143121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121341450142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1131859 + ... + 1234417.

It is an arithmetic number, because the mean of its divisors is an integer number (8337743400).

Almost surely, 2^121341450142 is an apocalyptic number.

121341450142 is a deficient number, since it is larger than the sum of its proper divisors (78764391458).

121341450142 is a wasteful number, since it uses less digits than its factorization.

121341450142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107472 (or 107461 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 121341450142 its reverse (241054143121), we get a palindrome (362395593263).

The spelling of 121341450142 in words is "one hundred twenty-one billion, three hundred forty-one million, four hundred fifty thousand, one hundred forty-two".