12875142743842 has 4 divisors (see below), whose sum is σ = 19312714115766. Its totient is φ = 6437571371920.

The previous prime is 12875142743747. The next prime is 12875142743861. The reversal of 12875142743842 is 24834724157821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6627437533161 + 6247705210681 = 2574381^2 + 2499541^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3218785685959 + ... + 3218785685962.

Almost surely, 2^{12875142743842} is an apocalyptic number.

12875142743842 is a deficient number, since it is larger than the sum of its proper divisors (6437571371924).

12875142743842 is an equidigital number, since it uses as much as digits as its factorization.

12875142743842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437571371923.

The product of its digits is 24084480, while the sum is 58.

The spelling of 12875142743842 in words is "twelve trillion, eight hundred seventy-five billion, one hundred forty-two million, seven hundred forty-three thousand, eight hundred forty-two".