121529693 has 4 divisors (see below), whose sum is σ = 121820160. Its totient is φ = 121239228.

The previous prime is 121529669. The next prime is 121529701. The reversal of 121529693 is 396925121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121529693 - 2⁸ = 121529437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121529623) 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 3 ways as a sum of consecutive naturals, for example, 144605 + ... + 145442.

It is an arithmetic number, because the mean of its divisors is an integer number (30455040).

Almost surely, 2^121529693 is an apocalyptic number.

It is an amenable number.

121529693 is a deficient number, since it is larger than the sum of its proper divisors (290467).

121529693 is an equidigital number, since it uses as much as digits as its factorization.

121529693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290466.

The product of its digits is 29160, while the sum is 38.

The square root of 121529693 is about 11024.0506620752. The cubic root of 121529693 is about 495.3294314247.

The spelling of 121529693 in words is "one hundred twenty-one million, five hundred twenty-nine thousand, six hundred ninety-three".