243363842 has 4 divisors (see below), whose sum is σ = 365045766. Its totient is φ = 121681920.

The previous prime is 243363839. The next prime is 243363847. The reversal of 243363842 is 248363342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248363342 = 2 ⋅124181671.

It can be written as a sum of positive squares in only one way, i.e., 243016921 + 346921 = 15589^2 + 589^2 .

It is not an unprimeable number, because it can be changed into a prime (243363847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60840959 + ... + 60840962.

Almost surely, 2^243363842 is an apocalyptic number.

243363842 is a deficient number, since it is larger than the sum of its proper divisors (121681924).

243363842 is a wasteful number, since it uses less digits than its factorization.

243363842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121681923.

The product of its digits is 82944, while the sum is 35.

The square root of 243363842 is about 15600.1231405396. The cubic root of 243363842 is about 624.3364409256.

The spelling of 243363842 in words is "two hundred forty-three million, three hundred sixty-three thousand, eight hundred forty-two".