142322445173 has 4 divisors (see below), whose sum is σ = 142343207820. Its totient is φ = 142301682528.

The previous prime is 142322445169. The next prime is 142322445203. The reversal of 142322445173 is 371544223241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371544223241 = 213467 ⋅1740523.

It can be written as a sum of positive squares in 2 ways, for example, as 66142581124 + 76179864049 = 257182^2 + 276007^2 .

It is a cyclic number.

It is not a de Polignac number, because 142322445173 - 2² = 142322445169 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 (142322445103) 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, 10371038 + ... + 10384751.

It is an arithmetic number, because the mean of its divisors is an integer number (35585801955).

Almost surely, 2^142322445173 is an apocalyptic number.

It is an amenable number.

142322445173 is a deficient number, since it is larger than the sum of its proper divisors (20762647).

142322445173 is an equidigital number, since it uses as much as digits as its factorization.

142322445173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20762646.

The product of its digits is 161280, while the sum is 38.

The spelling of 142322445173 in words is "one hundred forty-two billion, three hundred twenty-two million, four hundred forty-five thousand, one hundred seventy-three".