384204121 has 16 divisors (see below), whose sum is σ = 458956800. Its totient is φ = 314466768.

The previous prime is 384204103. The next prime is 384204133. The reversal of 384204121 is 121402483.

It is not a de Polignac number, because 384204121 - 2⁵ = 384204089 is a prime.

It is a super-2 number, since 2×384204121² = 295225613186765282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384204221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114100 + ... + 117418.

It is an arithmetic number, because the mean of its divisors is an integer number (28684800).

Almost surely, 2^384204121 is an apocalyptic number.

It is an amenable number.

384204121 is a deficient number, since it is larger than the sum of its proper divisors (74752679).

384204121 is a wasteful number, since it uses less digits than its factorization.

384204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 384204121 is about 19601.1255033990. The cubic root of 384204121 is about 726.9770033726.

The spelling of 384204121 in words is "three hundred eighty-four million, two hundred four thousand, one hundred twenty-one".