206434429 has 2 divisors, whose sum is σ = 206434430. Its totient is φ = 206434428.

The previous prime is 206434427. The next prime is 206434457. The reversal of 206434429 is 924434602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149084100 + 57350329 = 12210^2 + 7573^2 .

It is a cyclic number.

It is not a de Polignac number, because 206434429 - 2¹ = 206434427 is a prime.

Together with 206434427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 206434394 and 206434403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206434421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103217214 + 103217215.

It is an arithmetic number, because the mean of its divisors is an integer number (103217215).

Almost surely, 2^206434429 is an apocalyptic number.

It is an amenable number.

206434429 is a deficient number, since it is larger than the sum of its proper divisors (1).

206434429 is an equidigital number, since it uses as much as digits as its factorization.

206434429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 206434429 is about 14367.8261751735. The cubic root of 206434429 is about 591.0089305923.

The spelling of 206434429 in words is "two hundred six million, four hundred thirty-four thousand, four hundred twenty-nine".