12740229938 has 6 divisors (see below), whose sum is σ = 19110584349. Its totient is φ = 6370035156.

The previous prime is 12740229919. The next prime is 12740229979. The reversal of 12740229938 is 83992204721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7889525329 + 4850704609 = 88823^2 + 69647^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79813.

It is a super-2 number, since 2×12740229938² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12740229892 and 12740229901.

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 2 ways as a sum of consecutive naturals, for example, 119720 + ... + 199532.

Almost surely, 2^12740229938 is an apocalyptic number.

12740229938 is a deficient number, since it is larger than the sum of its proper divisors (6370354411).

12740229938 is an frugal number, since it uses more digits than its factorization.

12740229938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159628 (or 79815 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 12740229938 in words is "twelve billion, seven hundred forty million, two hundred twenty-nine thousand, nine hundred thirty-eight".