121752365542 has 8 divisors (see below), whose sum is σ = 182638638000. Its totient is φ = 60872819544.

The previous prime is 121752365533. The next prime is 121752365549. The reversal of 121752365542 is 245563257121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121752365549) by changing a digit.

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, 1636117 + ... + 1708912.

It is an arithmetic number, because the mean of its divisors is an integer number (22829829750).

Almost surely, 2^121752365542 is an apocalyptic number.

121752365542 is a deficient number, since it is larger than the sum of its proper divisors (60886272458).

121752365542 is a wasteful number, since it uses less digits than its factorization.

121752365542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363230.

The product of its digits is 504000, while the sum is 43.

The spelling of 121752365542 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred sixty-five thousand, five hundred forty-two".