121766992 has 20 divisors (see below), whose sum is σ = 238014900. Its totient is φ = 60343808.

The previous prime is 121766959. The next prime is 121766999. The reversal of 121766992 is 299667121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 678976 + 121088016 = 824^2 + 11004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121766999) 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, 31867 + ... + 35482.

It is an arithmetic number, because the mean of its divisors is an integer number (11900745).

Almost surely, 2^121766992 is an apocalyptic number.

It is an amenable number.

121766992 is a deficient number, since it is larger than the sum of its proper divisors (116247908).

121766992 is a wasteful number, since it uses less digits than its factorization.

121766992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67470 (or 67464 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 121766992 is about 11034.8081995112. The cubic root of 121766992 is about 495.6516153976.

The spelling of 121766992 in words is "one hundred twenty-one million, seven hundred sixty-six thousand, nine hundred ninety-two".