121784361 has 8 divisors (see below), whose sum is σ = 162490560. Its totient is φ = 81133872.

The previous prime is 121784339. The next prime is 121784363. The reversal of 121784361 is 163487121.

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

It is not a de Polignac number, because 121784361 - 2⁷ = 121784233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121784363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8526 + ... + 17783.

It is an arithmetic number, because the mean of its divisors is an integer number (20311320).

Almost surely, 2^121784361 is an apocalyptic number.

It is an amenable number.

121784361 is a deficient number, since it is larger than the sum of its proper divisors (40706199).

121784361 is a wasteful number, since it uses less digits than its factorization.

121784361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27855.

The product of its digits is 8064, while the sum is 33.

The square root of 121784361 is about 11035.5951810494. The cubic root of 121784361 is about 495.6751810714.

The spelling of 121784361 in words is "one hundred twenty-one million, seven hundred eighty-four thousand, three hundred sixty-one".