121394165 has 16 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 95402112.

The previous prime is 121394159. The next prime is 121394183. The reversal of 121394165 is 561493121.

It is a cyclic number.

It is not a de Polignac number, because 121394165 - 2⁶ = 121394101 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 91376 + ... + 92694.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^121394165 is an apocalyptic number.

It is an amenable number.

121394165 is a deficient number, since it is larger than the sum of its proper divisors (26868235).

121394165 is a wasteful number, since it uses less digits than its factorization.

121394165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636.

The product of its digits is 6480, while the sum is 32.

The square root of 121394165 is about 11017.9020235252. The cubic root of 121394165 is about 495.1452350760.

The spelling of 121394165 in words is "one hundred twenty-one million, three hundred ninety-four thousand, one hundred sixty-five".