243502134 has 16 divisors (see below), whose sum is σ = 487211760. Its totient is φ = 81132800.

The previous prime is 243502109. The next prime is 243502139. The reversal of 243502134 is 431205342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243502139) 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 in 7 ways as a sum of consecutive naturals, for example, 9562 + ... + 24050.

It is an arithmetic number, because the mean of its divisors is an integer number (30450735).

Almost surely, 2^243502134 is an apocalyptic number.

243502134 is an abundant number, since it is smaller than the sum of its proper divisors (243709626).

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

243502134 is a wasteful number, since it uses less digits than its factorization.

243502134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17295.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 243502134 is about 15604.5549119480. The cubic root of 243502134 is about 624.4546786845.

Adding to 243502134 its reverse (431205342), we get a palindrome (674707476).

The spelling of 243502134 in words is "two hundred forty-three million, five hundred two thousand, one hundred thirty-four".