243401434 has 4 divisors (see below), whose sum is σ = 365102154. Its totient is φ = 121700716.

The previous prime is 243401413. The next prime is 243401443. The reversal of 243401434 is 434104342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172791025 + 70610409 = 13145^2 + 8403^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243401399 and 243401408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850357 + ... + 60850360.

Almost surely, 2^243401434 is an apocalyptic number.

243401434 is a deficient number, since it is larger than the sum of its proper divisors (121700720).

243401434 is a wasteful number, since it uses less digits than its factorization.

243401434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121700719.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 243401434 is about 15601.3279562991. The cubic root of 243401434 is about 624.3685860010.

Adding to 243401434 its reverse (434104342), we get a palindrome (677505776).

The spelling of 243401434 in words is "two hundred forty-three million, four hundred one thousand, four hundred thirty-four".