243426424434 has 16 divisors (see below), whose sum is σ = 498175008672. Its totient is φ = 79255114848.

The previous prime is 243426424433. The next prime is 243426424453. The reversal of 243426424434 is 434424624342.

It is a super-2 number, since 2×243426424434² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243426424433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471756379 + ... + 471756894.

It is an arithmetic number, because the mean of its divisors is an integer number (31135938042).

Almost surely, 2^243426424434 is an apocalyptic number.

243426424434 is an abundant number, since it is smaller than the sum of its proper divisors (254748584238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243426424434 is a wasteful number, since it uses less digits than its factorization.

243426424434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943513321.

The product of its digits is 1769472, while the sum is 42.

The spelling of 243426424434 in words is "two hundred forty-three billion, four hundred twenty-six million, four hundred twenty-four thousand, four hundred thirty-four".