204121300 has 36 divisors (see below), whose sum is σ = 444602620. Its totient is φ = 81342720.

The previous prime is 204121289. The next prime is 204121327. The reversal of 204121300 is 3121402.

It can be written as a sum of positive squares in 6 ways, for example, as 944784 + 203176516 = 972^2 + 14254^2 .

It is a super-2 number, since 2×204121300² = 83331010227380000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24016 + ... + 31384.

Almost surely, 2^204121300 is an apocalyptic number.

204121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204121300 is an abundant number, since it is smaller than the sum of its proper divisors (240481320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204121300 is a wasteful number, since it uses less digits than its factorization.

204121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660 (or 7653 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 204121300 is about 14287.1025754000. The cubic root of 204121300 is about 588.7931857978.

Adding to 204121300 its reverse (3121402), we get a palindrome (207242702).

It can be divided in two parts, 20412 and 1300, that added together give a palindrome (21712).

The spelling of 204121300 in words is "two hundred four million, one hundred twenty-one thousand, three hundred".