121594729 has 3 divisors (see below), whose sum is σ = 121605757. Its totient is φ = 121583702.

The previous prime is 121594673. The next prime is 121594747. The reversal of 121594729 is 927495121.

It is a happy number.

The square root of 121594729 is 11027.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 121594729 - 2²¹ = 119497577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121594691 and 121594700.

It is not an unprimeable number, because it can be changed into a prime (121594769) 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 2 ways as a sum of consecutive naturals, for example, 5514 + ... + 16540.

Almost surely, 2^121594729 is an apocalyptic number.

121594729 is the 11027-th square number.

121594729 is the 5514-th centered octagonal number.

It is an amenable number.

121594729 is a deficient number, since it is larger than the sum of its proper divisors (11028).

121594729 is an frugal number, since it uses more digits than its factorization.

121594729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22054 (or 11027 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The cubic root of 121594729 is about 495.4177733473.

The spelling of 121594729 in words is "one hundred twenty-one million, five hundred ninety-four thousand, seven hundred twenty-nine".