121342243 has 8 divisors (see below), whose sum is σ = 140160240. Its totient is φ = 103822080.

The previous prime is 121342229. The next prime is 121342261. The reversal of 121342243 is 342243121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121342243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121342213) 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, 324258 + ... + 324631.

It is an arithmetic number, because the mean of its divisors is an integer number (17520030).

Almost surely, 2^121342243 is an apocalyptic number.

121342243 is a deficient number, since it is larger than the sum of its proper divisors (18817997).

121342243 is a wasteful number, since it uses less digits than its factorization.

121342243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648917.

The product of its digits is 1152, while the sum is 22.

The square root of 121342243 is about 11015.5455153161. The cubic root of 121342243 is about 495.0746314707.

Adding to 121342243 its reverse (342243121), we get a palindrome (463585364).

The spelling of 121342243 in words is "one hundred twenty-one million, three hundred forty-two thousand, two hundred forty-three".