202423040143 has 4 divisors (see below), whose sum is σ = 203900580720. Its totient is φ = 200945499568.

The previous prime is 202423040119. The next prime is 202423040177. The reversal of 202423040143 is 341040324202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202423040143 - 2¹⁷ = 202422909071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202423040843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738770083 + ... + 738770356.

It is an arithmetic number, because the mean of its divisors is an integer number (50975145180).

Almost surely, 2^202423040143 is an apocalyptic number.

202423040143 is a deficient number, since it is larger than the sum of its proper divisors (1477540577).

202423040143 is a wasteful number, since it uses less digits than its factorization.

202423040143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477540576.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 202423040143 its reverse (341040324202), we get a palindrome (543463364345).

The spelling of 202423040143 in words is "two hundred two billion, four hundred twenty-three million, forty thousand, one hundred forty-three".