121240265 has 8 divisors (see below), whose sum is σ = 145547520. Its totient is φ = 96952752.

The previous prime is 121240261. The next prime is 121240283. The reversal of 121240265 is 562042121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121240265 - 2² = 121240261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121240265.

It is not an unprimeable number, because it can be changed into a prime (121240261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20582 + ... + 25808.

It is an arithmetic number, because the mean of its divisors is an integer number (18193440).

Almost surely, 2^121240265 is an apocalyptic number.

It is an amenable number.

121240265 is a deficient number, since it is larger than the sum of its proper divisors (24307255).

121240265 is an equidigital number, since it uses as much as digits as its factorization.

121240265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9871.

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

The square root of 121240265 is about 11010.9157203204. The cubic root of 121240265 is about 494.9359030021.

Adding to 121240265 its reverse (562042121), we get a palindrome (683282386).

The spelling of 121240265 in words is "one hundred twenty-one million, two hundred forty thousand, two hundred sixty-five".