202430442423 has 24 divisors (see below), whose sum is σ = 301538474608. Its totient is φ = 120673872000.

The previous prime is 202430442397. The next prime is 202430442437. The reversal of 202430442423 is 324244034202.

It is not a de Polignac number, because 202430442423 - 2¹⁸ = 202430180279 is a prime.

It is a super-2 number, since 2×202430442423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202430442623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4548838 + ... + 4593123.

Almost surely, 2^202430442423 is an apocalyptic number.

202430442423 is a deficient number, since it is larger than the sum of its proper divisors (99108032185).

202430442423 is a wasteful number, since it uses less digits than its factorization.

202430442423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142047 (or 9142036 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 202430442423 its reverse (324244034202), we get a palindrome (526674476625).

The spelling of 202430442423 in words is "two hundred two billion, four hundred thirty million, four hundred forty-two thousand, four hundred twenty-three".