204124399 has 2 divisors, whose sum is σ = 204124400. Its totient is φ = 204124398.

The previous prime is 204124373. The next prime is 204124421. The reversal of 204124399 is 993421402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204124399 - 2¹¹ = 204122351 is a prime.

It is a super-2 number, since 2×204124399² = 83333540534222402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204124339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102062199 + 102062200.

It is an arithmetic number, because the mean of its divisors is an integer number (102062200).

Almost surely, 2^204124399 is an apocalyptic number.

204124399 is a deficient number, since it is larger than the sum of its proper divisors (1).

204124399 is an equidigital number, since it uses as much as digits as its factorization.

204124399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 204124399 is about 14287.2110294487. The cubic root of 204124399 is about 588.7961654981.

The spelling of 204124399 in words is "two hundred four million, one hundred twenty-four thousand, three hundred ninety-nine".