121232440342 has 24 divisors (see below), whose sum is σ = 203265097920. Its totient is φ = 54148479840.

The previous prime is 121232440331. The next prime is 121232440363. The reversal of 121232440342 is 243044232121.

It is a self number, because there is not a number n which added to its sum of digits gives 121232440342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5774617 + ... + 5795572.

It is an arithmetic number, because the mean of its divisors is an integer number (8469379080).

Almost surely, 2^121232440342 is an apocalyptic number.

121232440342 is a deficient number, since it is larger than the sum of its proper divisors (82032657578).

121232440342 is a wasteful number, since it uses less digits than its factorization.

121232440342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11570248 (or 11570235 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 121232440342 its reverse (243044232121), we get a palindrome (364276672463).

The spelling of 121232440342 in words is "one hundred twenty-one billion, two hundred thirty-two million, four hundred forty thousand, three hundred forty-two".