12342406538 has 32 divisors (see below), whose sum is σ = 24439667328. Its totient is φ = 4525862400.

The previous prime is 12342406537. The next prime is 12342406543. The reversal of 12342406538 is 83560424321.

It is not an unprimeable number, because it can be changed into a prime (12342406537) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2354603 + ... + 2359838.

It is an arithmetic number, because the mean of its divisors is an integer number (763739604).

Almost surely, 2^12342406538 is an apocalyptic number.

12342406538 is a deficient number, since it is larger than the sum of its proper divisors (12097260790).

12342406538 is a wasteful number, since it uses less digits than its factorization.

12342406538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714478.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 12342406538 in words is "twelve billion, three hundred forty-two million, four hundred six thousand, five hundred thirty-eight".