121752341742 has 8 divisors (see below), whose sum is σ = 243504683496. Its totient is φ = 40584113912.

The previous prime is 121752341731. The next prime is 121752341797. The reversal of 121752341742 is 247143257121.

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

121752341742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 121752341742.

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 3 ways as a sum of consecutive naturals, for example, 10146028473 + ... + 10146028484.

It is an arithmetic number, because the mean of its divisors is an integer number (30438085437).

Almost surely, 2^121752341742 is an apocalyptic number.

121752341742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121752341742 is a wasteful number, since it uses less digits than its factorization.

121752341742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20292056962.

The product of its digits is 94080, while the sum is 39.

Adding to 121752341742 its reverse (247143257121), we get a palindrome (368895598863).

The spelling of 121752341742 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred forty-one thousand, seven hundred forty-two".