243121014004 has 24 divisors (see below), whose sum is σ = 474015443328. Its totient is φ = 108158283840.

The previous prime is 243121013983. The next prime is 243121014007. The reversal of 243121014004 is 400410121342.

It is a happy number.

It is a super-2 number, since 2×243121014004² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121014007) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58779609 + ... + 58783744.

It is an arithmetic number, because the mean of its divisors is an integer number (19750643472).

Almost surely, 2^243121014004 is an apocalyptic number.

It is an amenable number.

243121014004 is a deficient number, since it is larger than the sum of its proper divisors (230894429324).

243121014004 is a wasteful number, since it uses less digits than its factorization.

243121014004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117563415 (or 117563413 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243121014004 its reverse (400410121342), we get a palindrome (643531135346).

The spelling of 243121014004 in words is "two hundred forty-three billion, one hundred twenty-one million, fourteen thousand, four".