121326243 has 8 divisors (see below), whose sum is σ = 164510400. Its totient is φ = 79513128.

The previous prime is 121326211. The next prime is 121326251. The reversal of 121326243 is 342623121.

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

It is not a de Polignac number, because 121326243 - 2⁵ = 121326211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121326203) 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, 342553 + ... + 342906.

It is an arithmetic number, because the mean of its divisors is an integer number (20563800).

Almost surely, 2^121326243 is an apocalyptic number.

121326243 is a deficient number, since it is larger than the sum of its proper divisors (43184157).

121326243 is an equidigital number, since it uses as much as digits as its factorization.

121326243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685521.

The product of its digits is 1728, while the sum is 24.

The square root of 121326243 is about 11014.8192449990. The cubic root of 121326243 is about 495.0528705898.

Adding to 121326243 its reverse (342623121), we get a palindrome (463949364).

The spelling of 121326243 in words is "one hundred twenty-one million, three hundred twenty-six thousand, two hundred forty-three".