243421449434 has 4 divisors (see below), whose sum is σ = 365132174154. Its totient is φ = 121710724716.

The previous prime is 243421449431. The next prime is 243421449487. The reversal of 243421449434 is 434944124342.

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., 238586333209 + 4835116225 = 488453^2 + 69535^2 .

It is not an unprimeable number, because it can be changed into a prime (243421449431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855362357 + ... + 60855362360.

Almost surely, 2^243421449434 is an apocalyptic number.

243421449434 is a deficient number, since it is larger than the sum of its proper divisors (121710724720).

243421449434 is a wasteful number, since it uses less digits than its factorization.

243421449434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121710724719.

The product of its digits is 1327104, while the sum is 44.

The spelling of 243421449434 in words is "two hundred forty-three billion, four hundred twenty-one million, four hundred forty-nine thousand, four hundred thirty-four".