12142943619 has 4 divisors (see below), whose sum is σ = 16190591496. Its totient is φ = 8095295744.

The previous prime is 12142943599. The next prime is 12142943621. The reversal of 12142943619 is 91634924121.

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 12142943619 - 2¹⁵ = 12142910851 is a prime.

It is a super-2 number, since 2×12142943619² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12142943639) 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, 2023823934 + ... + 2023823939.

It is an arithmetic number, because the mean of its divisors is an integer number (4047647874).

Almost surely, 2^12142943619 is an apocalyptic number.

12142943619 is a deficient number, since it is larger than the sum of its proper divisors (4047647877).

12142943619 is an equidigital number, since it uses as much as digits as its factorization.

12142943619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047647876.

The product of its digits is 93312, while the sum is 42.

The spelling of 12142943619 in words is "twelve billion, one hundred forty-two million, nine hundred forty-three thousand, six hundred nineteen".