12042057205 has 4 divisors (see below), whose sum is σ = 14450468652. Its totient is φ = 9633645760.

The previous prime is 12042057197. The next prime is 12042057211. The reversal of 12042057205 is 50275024021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3194397361 + 8847659844 = 56519^2 + 94062^2 .

It is not a de Polignac number, because 12042057205 - 2³ = 12042057197 is a prime.

It is a super-2 number, since 2×12042057205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204205716 + ... + 1204205725.

It is an arithmetic number, because the mean of its divisors is an integer number (3612617163).

Almost surely, 2^12042057205 is an apocalyptic number.

It is an amenable number.

12042057205 is a deficient number, since it is larger than the sum of its proper divisors (2408411447).

12042057205 is an equidigital number, since it uses as much as digits as its factorization.

12042057205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408411446.

The product of its (nonzero) digits is 5600, while the sum is 28.

The spelling of 12042057205 in words is "twelve billion, forty-two million, fifty-seven thousand, two hundred five".