12542057707 has 4 divisors (see below), whose sum is σ = 12693166920. Its totient is φ = 12390948496.

The previous prime is 12542057701. The next prime is 12542057729. The reversal of 12542057707 is 70775024521.

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

It is a cyclic number.

It is not a de Polignac number, because 12542057707 - 2⁷ = 12542057579 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12542057707.

It is not an unprimeable number, because it can be changed into a prime (12542057701) 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 3 ways as a sum of consecutive naturals, for example, 75554482 + ... + 75554647.

It is an arithmetic number, because the mean of its divisors is an integer number (3173291730).

Almost surely, 2^12542057707 is an apocalyptic number.

12542057707 is a deficient number, since it is larger than the sum of its proper divisors (151109213).

12542057707 is an equidigital number, since it uses as much as digits as its factorization.

12542057707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151109212.

The product of its (nonzero) digits is 137200, while the sum is 40.

The spelling of 12542057707 in words is "twelve billion, five hundred forty-two million, fifty-seven thousand, seven hundred seven".