121604207 has 4 divisors (see below), whose sum is σ = 123898680. Its totient is φ = 119309736.

The previous prime is 121604201. The next prime is 121604233. The reversal of 121604207 is 702406121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121604207 - 2⁴ = 121604191 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 (121604201) 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, 1147157 + ... + 1147262.

It is an arithmetic number, because the mean of its divisors is an integer number (30974670).

Almost surely, 2^121604207 is an apocalyptic number.

121604207 is a deficient number, since it is larger than the sum of its proper divisors (2294473).

121604207 is an equidigital number, since it uses as much as digits as its factorization.

121604207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294472.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 121604207 is about 11027.4297549338. The cubic root of 121604207 is about 495.4306451982.

The spelling of 121604207 in words is "one hundred twenty-one million, six hundred four thousand, two hundred seven".