121685368 has 32 divisors (see below), whose sum is σ = 262373760. Its totient is φ = 51827040.

The previous prime is 121685321. The next prime is 121685381. The reversal of 121685368 is 863586121.

It is a self number, because there is not a number n which added to its sum of digits gives 121685368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2463 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (8199180).

Almost surely, 2^121685368 is an apocalyptic number.

It is an amenable number.

121685368 is an abundant number, since it is smaller than the sum of its proper divisors (140688392).

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

121685368 is a wasteful number, since it uses less digits than its factorization.

121685368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13507 (or 13503 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 121685368 is about 11031.1091010832. The cubic root of 121685368 is about 495.5408406849.

The spelling of 121685368 in words is "one hundred twenty-one million, six hundred eighty-five thousand, three hundred sixty-eight".