202440142143 has 24 divisors (see below), whose sum is σ = 297264610656. Its totient is φ = 132738840000.

The previous prime is 202440142139. The next prime is 202440142189. The reversal of 202440142143 is 341241044202.

202440142143 is a `hidden beast` number, since 2 + 0 + 2 + 440 + 1 + 4 + 214 + 3 = 666.

It is not a de Polignac number, because 202440142143 - 2² = 202440142139 is a prime.

It is a super-2 number, since 2×202440142143² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202440142193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 600180 + ... + 874697.

It is an arithmetic number, because the mean of its divisors is an integer number (12386025444).

Almost surely, 2^202440142143 is an apocalyptic number.

202440142143 is a deficient number, since it is larger than the sum of its proper divisors (94824468513).

202440142143 is a wasteful number, since it uses less digits than its factorization.

202440142143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475135 (or 1475132 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 202440142143 its reverse (341241044202), we get a palindrome (543681186345).

The spelling of 202440142143 in words is "two hundred two billion, four hundred forty million, one hundred forty-two thousand, one hundred forty-three".