121727345 has 4 divisors (see below), whose sum is σ = 146072820. Its totient is φ = 97381872.

The previous prime is 121727323. The next prime is 121727369. The reversal of 121727345 is 543727121.

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 43652449 + 78074896 = 6607^2 + 8836^2 .

It is a cyclic number.

It is not a de Polignac number, because 121727345 - 2¹⁰ = 121726321 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12172730 + ... + 12172739.

It is an arithmetic number, because the mean of its divisors is an integer number (36518205).

Almost surely, 2^121727345 is an apocalyptic number.

It is an amenable number.

121727345 is a deficient number, since it is larger than the sum of its proper divisors (24345475).

121727345 is an equidigital number, since it uses as much as digits as its factorization.

121727345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24345474.

The product of its digits is 11760, while the sum is 32.

The square root of 121727345 is about 11033.0116015529. The cubic root of 121727345 is about 495.5978152874.

The spelling of 121727345 in words is "one hundred twenty-one million, seven hundred twenty-seven thousand, three hundred forty-five".