121126243 has 16 divisors (see below), whose sum is σ = 143585280. Its totient is φ = 99975456.

The previous prime is 121126237. The next prime is 121126289. The reversal of 121126243 is 342621121.

It is a de Polignac number, because none of the positive numbers 2^k-121126243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121136243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122730 + ... + 123712.

It is an arithmetic number, because the mean of its divisors is an integer number (8974080).

Almost surely, 2^121126243 is an apocalyptic number.

121126243 is a deficient number, since it is larger than the sum of its proper divisors (22459037).

121126243 is an equidigital number, since it uses as much as digits as its factorization.

121126243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its digits is 576, while the sum is 22.

The square root of 121126243 is about 11005.7368222214. The cubic root of 121126243 is about 494.7806980130.

Adding to 121126243 its reverse (342621121), we get a palindrome (463747364).

The spelling of 121126243 in words is "one hundred twenty-one million, one hundred twenty-six thousand, two hundred forty-three".