243263306542 has 8 divisors (see below), whose sum is σ = 364901389776. Its totient is φ = 121629509952.

The previous prime is 243263306479. The next prime is 243263306563. The reversal of 243263306542 is 245603362342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 243263306495 and 243263306504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925818 + ... + 1159165.

It is an arithmetic number, because the mean of its divisors is an integer number (45612673722).

Almost surely, 2^243263306542 is an apocalyptic number.

243263306542 is a deficient number, since it is larger than the sum of its proper divisors (121638083234).

243263306542 is a wasteful number, since it uses less digits than its factorization.

243263306542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143322.

The product of its (nonzero) digits is 622080, while the sum is 40.

Adding to 243263306542 its reverse (245603362342), we get a palindrome (488866668884).

The spelling of 243263306542 in words is "two hundred forty-three billion, two hundred sixty-three million, three hundred six thousand, five hundred forty-two".