202434191 has 2 divisors, whose sum is σ = 202434192. Its totient is φ = 202434190.

The previous prime is 202434157. The next prime is 202434223. The reversal of 202434191 is 191434202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202434191 - 2²² = 198239887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202434191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202434121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101217095 + 101217096.

It is an arithmetic number, because the mean of its divisors is an integer number (101217096).

Almost surely, 2^202434191 is an apocalyptic number.

202434191 is a deficient number, since it is larger than the sum of its proper divisors (1).

202434191 is an equidigital number, since it uses as much as digits as its factorization.

202434191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 202434191 is about 14227.9369903019. The cubic root of 202434191 is about 587.1665260671.

Adding to 202434191 its reverse (191434202), we get a palindrome (393868393).

The spelling of 202434191 in words is "two hundred two million, four hundred thirty-four thousand, one hundred ninety-one".