12142140401 has 4 divisors (see below), whose sum is σ = 12856383972. Its totient is φ = 11427896832.

The previous prime is 12142140391. The next prime is 12142140403. The reversal of 12142140401 is 10404124121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10404124121 = 47 ⋅221364343.

It can be written as a sum of positive squares in 2 ways, for example, as 9919960801 + 2222179600 = 99599^2 + 47140^2 .

It is a cyclic number.

It is not a de Polignac number, because 12142140401 - 2⁶ = 12142140337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12142140403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357121760 + ... + 357121793.

It is an arithmetic number, because the mean of its divisors is an integer number (3214095993).

Almost surely, 2^12142140401 is an apocalyptic number.

It is an amenable number.

12142140401 is a deficient number, since it is larger than the sum of its proper divisors (714243571).

12142140401 is an equidigital number, since it uses as much as digits as its factorization.

12142140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714243570.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12142140401 its reverse (10404124121), we get a palindrome (22546264522).

The spelling of 12142140401 in words is "twelve billion, one hundred forty-two million, one hundred forty thousand, four hundred one".