121688653342 has 8 divisors (see below), whose sum is σ = 185033432016. Its totient is φ = 60010842672.

The previous prime is 121688653337. The next prime is 121688653349. The reversal of 121688653342 is 243356886121.

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 (121688653349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416741818 + ... + 416742109.

It is an arithmetic number, because the mean of its divisors is an integer number (23129179002).

Almost surely, 2^121688653342 is an apocalyptic number.

121688653342 is a deficient number, since it is larger than the sum of its proper divisors (63344778674).

121688653342 is an equidigital number, since it uses as much as digits as its factorization.

121688653342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833484002.

The product of its digits is 1658880, while the sum is 49.

The spelling of 121688653342 in words is "one hundred twenty-one billion, six hundred eighty-eight million, six hundred fifty-three thousand, three hundred forty-two".