202140243 has 12 divisors (see below), whose sum is σ = 301399488. Its totient is φ = 130412880.

The previous prime is 202140241. The next prime is 202140247. The reversal of 202140243 is 342041202.

It is not a de Polignac number, because 202140243 - 2¹ = 202140241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202140241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361980 + ... + 362537.

It is an arithmetic number, because the mean of its divisors is an integer number (25116624).

Almost surely, 2^202140243 is an apocalyptic number.

202140243 is a deficient number, since it is larger than the sum of its proper divisors (99259245).

202140243 is a wasteful number, since it uses less digits than its factorization.

202140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724554 (or 724551 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 202140243 is about 14217.6032790341. The cubic root of 202140243 is about 586.8821866922.

Adding to 202140243 its reverse (342041202), we get a palindrome (544181445).

The spelling of 202140243 in words is "two hundred two million, one hundred forty thousand, two hundred forty-three".