12042442106 has 4 divisors (see below), whose sum is σ = 18063663162. Its totient is φ = 6021221052.

The previous prime is 12042442103. The next prime is 12042442123. The reversal of 12042442106 is 60124424021.

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., 9016452025 + 3025990081 = 94955^2 + 55009^2 .

It is not an unprimeable number, because it can be changed into a prime (12042442103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3010610525 + ... + 3010610528.

Almost surely, 2^12042442106 is an apocalyptic number.

12042442106 is a deficient number, since it is larger than the sum of its proper divisors (6021221056).

12042442106 is an equidigital number, since it uses as much as digits as its factorization.

12042442106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021221055.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12042442106 its reverse (60124424021), we get a palindrome (72166866127).

The spelling of 12042442106 in words is "twelve billion, forty-two million, four hundred forty-two thousand, one hundred six".