12459143439842 has 18 divisors (see below), whose sum is σ = 20542231990497. Its totient is φ = 5663222059000.

The previous prime is 12459143439829. The next prime is 12459143439857. The reversal of 12459143439842 is 24893434195421.

It can be written as a sum of positive squares in 2 ways, for example, as 9051800321641 + 3407343118201 = 3008621^2 + 1845899^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2495911.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54796592 + ... + 55023492.

Almost surely, 2^{12459143439842} is an apocalyptic number.

12459143439842 is a deficient number, since it is larger than the sum of its proper divisors (8083088550655).

12459143439842 is an frugal number, since it uses more digits than its factorization.

12459143439842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453826 (or 226914 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 59.

The spelling of 12459143439842 in words is "twelve trillion, four hundred fifty-nine billion, one hundred forty-three million, four hundred thirty-nine thousand, eight hundred forty-two".