304202121 has 8 divisors (see below), whose sum is σ = 405746880. Its totient is φ = 202729392.

The previous prime is 304202113. The next prime is 304202137. The reversal of 304202121 is 121202403.

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

It is not a de Polignac number, because 304202121 - 2³ = 304202113 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 304202121.

It is not an unprimeable number, because it can be changed into a prime (304202111) 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, 7230 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (50718360).

Almost surely, 2^304202121 is an apocalyptic number.

It is an amenable number.

304202121 is a deficient number, since it is larger than the sum of its proper divisors (101544759).

304202121 is a wasteful number, since it uses less digits than its factorization.

304202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36015.

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

The square root of 304202121 is about 17441.3910282408. The cubic root of 304202121 is about 672.5440671685.

Adding to 304202121 its reverse (121202403), we get a palindrome (425404524).

The spelling of 304202121 in words is "three hundred four million, two hundred two thousand, one hundred twenty-one".