202342423 has 2 divisors, whose sum is σ = 202342424. Its totient is φ = 202342422.

The previous prime is 202342417. The next prime is 202342471. The reversal of 202342423 is 324243202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202342423 - 2²⁵ = 168787991 is a prime.

It is a super-2 number, since 2×202342423² = 81884912291021858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202342394 and 202342403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202342493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101171211 + 101171212.

It is an arithmetic number, because the mean of its divisors is an integer number (101171212).

Almost surely, 2^202342423 is an apocalyptic number.

202342423 is a deficient number, since it is larger than the sum of its proper divisors (1).

202342423 is an equidigital number, since it uses as much as digits as its factorization.

202342423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 202342423 is about 14224.7117018237. The cubic root of 202342423 is about 587.0777873652.

Adding to 202342423 its reverse (324243202), we get a palindrome (526585625).

The spelling of 202342423 in words is "two hundred two million, three hundred forty-two thousand, four hundred twenty-three".