243719042 has 54 divisors (see below), whose sum is σ = 454297923. Its totient is φ = 97761384.

The previous prime is 243719009. The next prime is 243719051. The reversal of 243719042 is 240917342.

243719042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 121859521 + 121859521 = 11039^2 + 11039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11039.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2936333 + ... + 2936415.

Almost surely, 2^243719042 is an apocalyptic number.

243719042 is a deficient number, since it is larger than the sum of its proper divisors (210578881).

243719042 is an equidigital number, since it uses as much as digits as its factorization.

243719042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 243719042 is about 15611.5035150366. The cubic root of 243719042 is about 624.6400419014.

Multiplying 243719042 by its sum of digits (32), we get a square (7799009344 = 88312²).

The spelling of 243719042 in words is "two hundred forty-three million, seven hundred nineteen thousand, forty-two".