142312245135221 has 32 divisors (see below), whose sum is σ = 164490588530688. Its totient is φ = 120603838161600.

The previous prime is 142312245135157. The next prime is 142312245135223. The reversal of 142312245135221 is 122531542213241.

142312245135221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142312245135221 - 2⁶ = 142312245135157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142312245135223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 809226326 + ... + 809402168.

It is an arithmetic number, because the mean of its divisors is an integer number (5140330891584).

Almost surely, 2^{142312245135221} is an apocalyptic number.

It is an amenable number.

142312245135221 is a deficient number, since it is larger than the sum of its proper divisors (22178343395467).

142312245135221 is a wasteful number, since it uses less digits than its factorization.

142312245135221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179601.

The product of its digits is 115200, while the sum is 38.

Adding to 142312245135221 its reverse (122531542213241), we get a palindrome (264843787348462).

The spelling of 142312245135221 in words is "one hundred forty-two trillion, three hundred twelve billion, two hundred forty-five million, one hundred thirty-five thousand, two hundred twenty-one".