121253766 has 8 divisors (see below), whose sum is σ = 242507544. Its totient is φ = 40417920.

The previous prime is 121253761. The next prime is 121253767. The reversal of 121253766 is 667352121.

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

121253766 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121253761) 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, 10104475 + ... + 10104486.

It is an arithmetic number, because the mean of its divisors is an integer number (30313443).

Almost surely, 2^121253766 is an apocalyptic number.

121253766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121253766 is a wasteful number, since it uses less digits than its factorization.

121253766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20208966.

The product of its digits is 15120, while the sum is 33.

The square root of 121253766 is about 11011.5287766958. The cubic root of 121253766 is about 494.9542739110.

The spelling of 121253766 in words is "one hundred twenty-one million, two hundred fifty-three thousand, seven hundred sixty-six".