121242065 has 16 divisors (see below), whose sum is σ = 166458240. Its totient is φ = 83045760.

The previous prime is 121242049. The next prime is 121242083. The reversal of 121242065 is 560242121.

It is a happy number.

It is not a de Polignac number, because 121242065 - 2⁴ = 121242049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121242065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50666 + ... + 53004.

It is an arithmetic number, because the mean of its divisors is an integer number (10403640).

Almost surely, 2^121242065 is an apocalyptic number.

It is an amenable number.

121242065 is a deficient number, since it is larger than the sum of its proper divisors (45216175).

121242065 is a wasteful number, since it uses less digits than its factorization.

121242065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 121242065 is about 11010.9974570881. The cubic root of 121242065 is about 494.9383523540.

Adding to 121242065 its reverse (560242121), we get a palindrome (681484186).

The spelling of 121242065 in words is "one hundred twenty-one million, two hundred forty-two thousand, sixty-five".