204131429 has 2 divisors, whose sum is σ = 204131430. Its totient is φ = 204131428.

The previous prime is 204131423. The next prime is 204131467. The reversal of 204131429 is 924131402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177608929 + 26522500 = 13327^2 + 5150^2 .

It is a cyclic number.

It is not a de Polignac number, because 204131429 - 2⁸ = 204131173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204131398 and 204131407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204131423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102065714 + 102065715.

It is an arithmetic number, because the mean of its divisors is an integer number (102065715).

Almost surely, 2^204131429 is an apocalyptic number.

It is an amenable number.

204131429 is a deficient number, since it is larger than the sum of its proper divisors (1).

204131429 is an equidigital number, since it uses as much as digits as its factorization.

204131429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 204131429 is about 14287.4570515540. The cubic root of 204131429 is about 588.8029247579.

The spelling of 204131429 in words is "two hundred four million, one hundred thirty-one thousand, four hundred twenty-nine".