121727089 has 27 divisors (see below), whose sum is σ = 144582571. Its totient is φ = 102386240.

The previous prime is 121727083. The next prime is 121727093. The reversal of 121727089 is 980727121.

The square root of 121727089 is 11033.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 94770225 + 26956864 = 9735^2 + 5192^2 .

It is not a de Polignac number, because 121727089 - 2⁵ = 121727057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121727083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2063142 + ... + 2063200.

Almost surely, 2^121727089 is an apocalyptic number.

121727089 is the 11033-rd square number.

121727089 is the 5517-th centered octagonal number.

It is an amenable number.

121727089 is a deficient number, since it is larger than the sum of its proper divisors (22855482).

121727089 is an equidigital number, since it uses as much as digits as its factorization.

121727089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The cubic root of 121727089 is about 495.5974678631.

The spelling of 121727089 in words is "one hundred twenty-one million, seven hundred twenty-seven thousand, eighty-nine".