202012543 has 2 divisors, whose sum is σ = 202012544. Its totient is φ = 202012542.

The previous prime is 202012529. The next prime is 202012549. The reversal of 202012543 is 345210202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202012543 - 2¹³ = 202004351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202012543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202012549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006271 + 101006272.

It is an arithmetic number, because the mean of its divisors is an integer number (101006272).

Almost surely, 2^202012543 is an apocalyptic number.

202012543 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012543 is an equidigital number, since it uses as much as digits as its factorization.

202012543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 202012543 is about 14213.1116579024. Note that the first 3 decimals coincide. The cubic root of 202012543 is about 586.7585750821.

Adding to 202012543 its reverse (345210202), we get a palindrome (547222745).

The spelling of 202012543 in words is "two hundred two million, twelve thousand, five hundred forty-three".