142097646848221 has 4 divisors (see below), whose sum is σ = 142105335717244. Its totient is φ = 142089957979200.

The previous prime is 142097646848219. The next prime is 142097646848239. The reversal of 142097646848221 is 122848646790241.

It is a happy number.

142097646848221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 76091950224900 + 66005696623321 = 8723070^2 + 8124389^2 .

It is a cyclic number.

It is not a de Polignac number, because 142097646848221 - 2¹ = 142097646848219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142097646248221) 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, 3844406790 + ... + 3844443751.

It is an arithmetic number, because the mean of its divisors is an integer number (35526333929311).

Almost surely, 2^{142097646848221} is an apocalyptic number.

It is an amenable number.

142097646848221 is a deficient number, since it is larger than the sum of its proper divisors (7688869023).

142097646848221 is an equidigital number, since it uses as much as digits as its factorization.

142097646848221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688869022.

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 142097646848221 in words is "one hundred forty-two trillion, ninety-seven billion, six hundred forty-six million, eight hundred forty-eight thousand, two hundred twenty-one".