243001021004 has 24 divisors (see below), whose sum is σ = 486238884768. Its totient is φ = 104092542720.

The previous prime is 243001021001. The next prime is 243001021013. The reversal of 243001021004 is 400120100342.

It is not an unprimeable number, because it can be changed into a prime (243001021001) 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, 2056157 + ... + 2171124.

It is an arithmetic number, because the mean of its divisors is an integer number (20259953532).

Almost surely, 2^243001021004 is an apocalyptic number.

It is an amenable number.

243001021004 is an abundant number, since it is smaller than the sum of its proper divisors (243237863764).

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

243001021004 is a wasteful number, since it uses less digits than its factorization.

243001021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229345 (or 4229343 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 243001021004 its reverse (400120100342), we get a palindrome (643121121346).

The spelling of 243001021004 in words is "two hundred forty-three billion, one million, twenty-one thousand, four".