121364645 has 4 divisors (see below), whose sum is σ = 145637580. Its totient is φ = 97091712.

The previous prime is 121364641. The next prime is 121364651. The reversal of 121364645 is 546463121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78304801 + 43059844 = 8849^2 + 6562^2 .

It is a cyclic number.

It is not a de Polignac number, because 121364645 - 2² = 121364641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121364641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12136460 + ... + 12136469.

It is an arithmetic number, because the mean of its divisors is an integer number (36409395).

Almost surely, 2^121364645 is an apocalyptic number.

It is an amenable number.

121364645 is a deficient number, since it is larger than the sum of its proper divisors (24272935).

121364645 is an equidigital number, since it uses as much as digits as its factorization.

121364645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24272934.

The product of its digits is 17280, while the sum is 32.

The square root of 121364645 is about 11016.5623040947. The cubic root of 121364645 is about 495.1050962102.

The spelling of 121364645 in words is "one hundred twenty-one million, three hundred sixty-four thousand, six hundred forty-five".