121768187 has 8 divisors (see below), whose sum is σ = 131444640. Its totient is φ = 112456960.

The previous prime is 121768183. The next prime is 121768193. The reversal of 121768187 is 781867121.

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

It is a cyclic number.

It is not a de Polignac number, because 121768187 - 2² = 121768183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121768181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90614 + ... + 91947.

It is an arithmetic number, because the mean of its divisors is an integer number (16430580).

Almost surely, 2^121768187 is an apocalyptic number.

121768187 is a deficient number, since it is larger than the sum of its proper divisors (9676453).

121768187 is a wasteful number, since it uses less digits than its factorization.

121768187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182613.

The product of its digits is 37632, while the sum is 41.

The square root of 121768187 is about 11034.8623462189. The cubic root of 121768187 is about 495.6532368051.

The spelling of 121768187 in words is "one hundred twenty-one million, seven hundred sixty-eight thousand, one hundred eighty-seven".