243442534 has 16 divisors (see below), whose sum is σ = 381858048. Its totient is φ = 116179272.

The previous prime is 243442519. The next prime is 243442541. The reversal of 243442534 is 435244342.

It is a junction number, because it is equal to n+sod(n) for n = 243442496 and 243442505.

It is a congruent number.

It is an unprimeable number.

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, 16969 + ... + 27835.

It is an arithmetic number, because the mean of its divisors is an integer number (23866128).

Almost surely, 2^243442534 is an apocalyptic number.

243442534 is a deficient number, since it is larger than the sum of its proper divisors (138415514).

243442534 is a wasteful number, since it uses less digits than its factorization.

243442534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11379.

The product of its digits is 46080, while the sum is 31.

The square root of 243442534 is about 15602.6450962649. The cubic root of 243442534 is about 624.4037269945.

Adding to 243442534 its reverse (435244342), we get a palindrome (678686876).

The spelling of 243442534 in words is "two hundred forty-three million, four hundred forty-two thousand, five hundred thirty-four".