243042155252 has 12 divisors (see below), whose sum is σ = 458040984996. Its totient is φ = 112173302400.

The previous prime is 243042155233. The next prime is 243042155261. The reversal of 243042155252 is 252551240342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19089843556 + 223952311696 = 138166^2 + 473236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336943749 + ... + 2336943852.

It is an arithmetic number, because the mean of its divisors is an integer number (38170082083).

Almost surely, 2^243042155252 is an apocalyptic number.

It is an amenable number.

243042155252 is a deficient number, since it is larger than the sum of its proper divisors (214998829744).

243042155252 is a wasteful number, since it uses less digits than its factorization.

243042155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673887618 (or 4673887616 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 243042155252 its reverse (252551240342), we get a palindrome (495593395594).

The spelling of 243042155252 in words is "two hundred forty-three billion, forty-two million, one hundred fifty-five thousand, two hundred fifty-two".