142253222321 has 4 divisors (see below), whose sum is σ = 162575111232. Its totient is φ = 121931333412.

The previous prime is 142253222311. The next prime is 142253222323. The reversal of 142253222321 is 123222352241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142253222321 - 2³⁴ = 125073353137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142253222323) 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, 10160944445 + ... + 10160944458.

It is an arithmetic number, because the mean of its divisors is an integer number (40643777808).

Almost surely, 2^142253222321 is an apocalyptic number.

It is an amenable number.

142253222321 is a deficient number, since it is larger than the sum of its proper divisors (20321888911).

142253222321 is an equidigital number, since it uses as much as digits as its factorization.

142253222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20321888910.

The product of its digits is 11520, while the sum is 29.

Adding to 142253222321 its reverse (123222352241), we get a palindrome (265475574562).

The spelling of 142253222321 in words is "one hundred forty-two billion, two hundred fifty-three million, two hundred twenty-two thousand, three hundred twenty-one".