123040242044 has 12 divisors (see below), whose sum is σ = 215367789000. Its totient is φ = 61506588048.

The previous prime is 123040242001. The next prime is 123040242079. The reversal of 123040242044 is 440242040321.

It is a happy number.

It is a super-2 number, since 2×123040242044² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3362774 + ... + 3399165.

It is an arithmetic number, because the mean of its divisors is an integer number (17947315750).

Almost surely, 2^123040242044 is an apocalyptic number.

It is an amenable number.

123040242044 is a deficient number, since it is larger than the sum of its proper divisors (92327546956).

123040242044 is a wasteful number, since it uses less digits than its factorization.

123040242044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766492 (or 6766490 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 123040242044 its reverse (440242040321), we get a palindrome (563282282365).

The spelling of 123040242044 in words is "one hundred twenty-three billion, forty million, two hundred forty-two thousand, forty-four".