121743365 has 4 divisors (see below), whose sum is σ = 146092044. Its totient is φ = 97394688.

The previous prime is 121743329. The next prime is 121743379. The reversal of 121743365 is 563347121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563347121 = 193 ⋅2918897.

It can be written as a sum of positive squares in 2 ways, for example, as 79727041 + 42016324 = 8929^2 + 6482^2 .

It is a cyclic number.

It is not a de Polignac number, because 121743365 - 2⁸ = 121743109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12174332 + ... + 12174341.

It is an arithmetic number, because the mean of its divisors is an integer number (36523011).

Almost surely, 2^121743365 is an apocalyptic number.

It is an amenable number.

121743365 is a deficient number, since it is larger than the sum of its proper divisors (24348679).

121743365 is an equidigital number, since it uses as much as digits as its factorization.

121743365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24348678.

The product of its digits is 15120, while the sum is 32.

The square root of 121743365 is about 11033.7375807113. The cubic root of 121743365 is about 495.6195554827.

The spelling of 121743365 in words is "one hundred twenty-one million, seven hundred forty-three thousand, three hundred sixty-five".