121665374 has 8 divisors (see below), whose sum is σ = 182590848. Its totient is φ = 60801760.

The previous prime is 121665371. The next prime is 121665389. The reversal of 121665374 is 473566121.

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

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121665371) 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, 10187 + ... + 18630.

It is an arithmetic number, because the mean of its divisors is an integer number (22823856).

Almost surely, 2^121665374 is an apocalyptic number.

121665374 is a deficient number, since it is larger than the sum of its proper divisors (60925474).

121665374 is a wasteful number, since it uses less digits than its factorization.

121665374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30930.

The product of its digits is 30240, while the sum is 35.

The square root of 121665374 is about 11030.2028086523. The cubic root of 121665374 is about 495.5136985932.

The spelling of 121665374 in words is "one hundred twenty-one million, six hundred sixty-five thousand, three hundred seventy-four".