121053243 has 16 divisors (see below), whose sum is σ = 171503136. Its totient is φ = 75686400.

The previous prime is 121053239. The next prime is 121053253. The reversal of 121053243 is 342350121.

It is not a de Polignac number, because 121053243 - 2² = 121053239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121053203) 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, 10893 + ... + 18993.

It is an arithmetic number, because the mean of its divisors is an integer number (10718946).

Almost surely, 2^121053243 is an apocalyptic number.

121053243 is a deficient number, since it is larger than the sum of its proper divisors (50449893).

121053243 is a wasteful number, since it uses less digits than its factorization.

121053243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121053243 is about 11002.4198701922. The cubic root of 121053243 is about 494.6812803902.

The spelling of 121053243 in words is "one hundred twenty-one million, fifty-three thousand, two hundred forty-three".