142040121212243 has 4 divisors (see below), whose sum is σ = 150395422460040. Its totient is φ = 133684819964448.

The previous prime is 142040121212237. The next prime is 142040121212267. The reversal of 142040121212243 is 342212121040241.

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 142040121212243 - 2²⁶ = 142040054103379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142040121212203) 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, 4177650623873 + ... + 4177650623906.

It is an arithmetic number, because the mean of its divisors is an integer number (37598855615010).

Almost surely, 2^{142040121212243} is an apocalyptic number.

142040121212243 is a deficient number, since it is larger than the sum of its proper divisors (8355301247797).

142040121212243 is an equidigital number, since it uses as much as digits as its factorization.

142040121212243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355301247796.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 142040121212243 its reverse (342212121040241), we get a palindrome (484252242252484).

The spelling of 142040121212243 in words is "one hundred forty-two trillion, forty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred forty-three".