121323243 has 8 divisors (see below), whose sum is σ = 166982656. Its totient is φ = 78273000.

The previous prime is 121323239. The next prime is 121323247. The reversal of 121323243 is 342323121.

It is an interprime number because it is at equal distance from previous prime (121323239) and next prime (121323247).

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

It is not a de Polignac number, because 121323243 - 2² = 121323239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121323247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652183 + ... + 652368.

It is an arithmetic number, because the mean of its divisors is an integer number (20872832).

Almost surely, 2^121323243 is an apocalyptic number.

121323243 is a deficient number, since it is larger than the sum of its proper divisors (45659413).

121323243 is a wasteful number, since it uses less digits than its factorization.

121323243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304585.

The product of its digits is 864, while the sum is 21.

The square root of 121323243 is about 11014.6830639833. The cubic root of 121323243 is about 495.0487902117.

Adding to 121323243 its reverse (342323121), we get a palindrome (463646364).

The spelling of 121323243 in words is "one hundred twenty-one million, three hundred twenty-three thousand, two hundred forty-three".