121604245 has 16 divisors (see below), whose sum is σ = 166953600. Its totient is φ = 83294784.

The previous prime is 121604239. The next prime is 121604257. The reversal of 121604245 is 542406121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121604245 - 2¹⁷ = 121473173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53094 + ... + 55336.

It is an arithmetic number, because the mean of its divisors is an integer number (10434600).

Almost surely, 2^121604245 is an apocalyptic number.

It is an amenable number.

121604245 is a deficient number, since it is larger than the sum of its proper divisors (45349355).

121604245 is a wasteful number, since it uses less digits than its factorization.

121604245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 121604245 is about 11027.4314779100. The cubic root of 121604245 is about 495.4306968037.

The spelling of 121604245 in words is "one hundred twenty-one million, six hundred four thousand, two hundred forty-five".