200342423 has 2 divisors, whose sum is σ = 200342424. Its totient is φ = 200342422.

The previous prime is 200342419. The next prime is 200342447. The reversal of 200342423 is 324243002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200342423 - 2² = 200342419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200342395 and 200342404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200342473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100171211 + 100171212.

It is an arithmetic number, because the mean of its divisors is an integer number (100171212).

Almost surely, 2^200342423 is an apocalyptic number.

200342423 is a deficient number, since it is larger than the sum of its proper divisors (1).

200342423 is an equidigital number, since it uses as much as digits as its factorization.

200342423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 200342423 is about 14154.2369275069. The cubic root of 200342423 is about 585.1371076592.

Adding to 200342423 its reverse (324243002), we get a palindrome (524585425).

The spelling of 200342423 in words is "two hundred million, three hundred forty-two thousand, four hundred twenty-three".