209241840234 has 32 divisors (see below), whose sum is σ = 478329780096. Its totient is φ = 59775543360.

The previous prime is 209241840229. The next prime is 209241840239. The reversal of 209241840234 is 432048142902.

209241840234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (209241840229) and next prime (209241840239).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 209241840192 and 209241840201.

It is not an unprimeable number, because it can be changed into a prime (209241840239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324 + ... + 646904.

It is an arithmetic number, because the mean of its divisors is an integer number (14947805628).

Almost surely, 2^209241840234 is an apocalyptic number.

209241840234 is an abundant number, since it is smaller than the sum of its proper divisors (269087939862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209241840234 is a wasteful number, since it uses less digits than its factorization.

209241840234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653310.

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 209241840234 in words is "two hundred nine billion, two hundred forty-one million, eight hundred forty thousand, two hundred thirty-four".