203204121 has 8 divisors (see below), whose sum is σ = 272314944. Its totient is φ = 134781360.

The previous prime is 203204093. The next prime is 203204123. The reversal of 203204121 is 121402302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203204121 - 2¹³ = 203195929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203204121.

It is not an unprimeable number, because it can be changed into a prime (203204123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171325 + ... + 172506.

It is an arithmetic number, because the mean of its divisors is an integer number (34039368).

Almost surely, 2^203204121 is an apocalyptic number.

It is an amenable number.

203204121 is a deficient number, since it is larger than the sum of its proper divisors (69110823).

203204121 is a wasteful number, since it uses less digits than its factorization.

203204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344031.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 203204121 is about 14254.9682917922. The cubic root of 203204121 is about 587.9099861052.

Adding to 203204121 its reverse (121402302), we get a palindrome (324606423).

The spelling of 203204121 in words is "two hundred three million, two hundred four thousand, one hundred twenty-one".