243304421004 has 60 divisors (see below), whose sum is σ = 636452014968. Its totient is φ = 81049680000.

The previous prime is 243304420991. The next prime is 243304421027. The reversal of 243304421004 is 400124403342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 270004 + ... + 748004.

Almost surely, 2^243304421004 is an apocalyptic number.

It is an amenable number.

243304421004 is an abundant number, since it is smaller than the sum of its proper divisors (393147593964).

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

243304421004 is a wasteful number, since it uses less digits than its factorization.

243304421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479588 (or 479577 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 243304421004 its reverse (400124403342), we get a palindrome (643428824346).

The spelling of 243304421004 in words is "two hundred forty-three billion, three hundred four million, four hundred twenty-one thousand, four".