123340040434 has 16 divisors (see below), whose sum is σ = 200284761600. Its totient is φ = 56628127440.

The previous prime is 123340040407. The next prime is 123340040437. The reversal of 123340040434 is 434040043321.

It is not an unprimeable number, because it can be changed into a prime (123340040437) 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, 12413484 + ... + 12423415.

It is an arithmetic number, because the mean of its divisors is an integer number (12517797600).

Almost surely, 2^123340040434 is an apocalyptic number.

123340040434 is a deficient number, since it is larger than the sum of its proper divisors (76944721166).

123340040434 is a wasteful number, since it uses less digits than its factorization.

123340040434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24837105.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123340040434 its reverse (434040043321), we get a palindrome (557380083755).

The spelling of 123340040434 in words is "one hundred twenty-three billion, three hundred forty million, forty thousand, four hundred thirty-four".