243554542 has 32 divisors (see below), whose sum is σ = 456217344. Its totient is φ = 94737600.

The previous prime is 243554539. The next prime is 243554593. The reversal of 243554542 is 245455342.

243554542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243554498 and 243554507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158317 + ... + 159847.

It is an arithmetic number, because the mean of its divisors is an integer number (14256792).

Almost surely, 2^243554542 is an apocalyptic number.

243554542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243554542 is a deficient number, since it is larger than the sum of its proper divisors (212662802).

243554542 is a wasteful number, since it uses less digits than its factorization.

243554542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584.

The product of its digits is 96000, while the sum is 34.

The square root of 243554542 is about 15606.2340748817. The cubic root of 243554542 is about 624.4994751067.

The spelling of 243554542 in words is "two hundred forty-three million, five hundred fifty-four thousand, five hundred forty-two".