121300243 has 8 divisors (see below), whose sum is σ = 125635680. Its totient is φ = 116975040.

The previous prime is 121300159. The next prime is 121300261. The reversal of 121300243 is 342003121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121300243 - 2¹⁷ = 121169171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121300273) 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, 27871 + ... + 31927.

It is an arithmetic number, because the mean of its divisors is an integer number (15704460).

Almost surely, 2^121300243 is an apocalyptic number.

121300243 is a deficient number, since it is larger than the sum of its proper divisors (4335437).

121300243 is a wasteful number, since it uses less digits than its factorization.

121300243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121300243 is about 11013.6389535884. The cubic root of 121300243 is about 495.0175050776.

Adding to 121300243 its reverse (342003121), we get a palindrome (463303364).

The spelling of 121300243 in words is "one hundred twenty-one million, three hundred thousand, two hundred forty-three".