202543427 has 2 divisors, whose sum is σ = 202543428. Its totient is φ = 202543426.

The previous prime is 202543421. The next prime is 202543487. The reversal of 202543427 is 724345202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202543427 - 2²⁰ = 201494851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202543427.

It is not a weakly prime, because it can be changed into another prime (202543421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101271713 + 101271714.

It is an arithmetic number, because the mean of its divisors is an integer number (101271714).

Almost surely, 2^202543427 is an apocalyptic number.

202543427 is a deficient number, since it is larger than the sum of its proper divisors (1).

202543427 is an equidigital number, since it uses as much as digits as its factorization.

202543427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 202543427 is about 14231.7752582030. The cubic root of 202543427 is about 587.2721211890.

Adding to 202543427 its reverse (724345202), we get a palindrome (926888629).

The spelling of 202543427 in words is "two hundred two million, five hundred forty-three thousand, four hundred twenty-seven".