142422173 has 4 divisors (see below), whose sum is σ = 145452480. Its totient is φ = 139391868.

The previous prime is 142422167. The next prime is 142422179. The reversal of 142422173 is 371224241.

142422173 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 371224241 = 631 ⋅588311.

It is an interprime number because it is at equal distance from previous prime (142422167) and next prime (142422179).

It is a cyclic number.

It is not a de Polignac number, because 142422173 - 2¹⁴ = 142405789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142422179) 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, 1515083 + ... + 1515176.

It is an arithmetic number, because the mean of its divisors is an integer number (36363120).

Almost surely, 2^142422173 is an apocalyptic number.

It is an amenable number.

142422173 is a deficient number, since it is larger than the sum of its proper divisors (3030307).

142422173 is an equidigital number, since it uses as much as digits as its factorization.

142422173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030306.

The product of its digits is 2688, while the sum is 26.

The square root of 142422173 is about 11934.0761267892. The cubic root of 142422173 is about 522.2268566177.

The spelling of 142422173 in words is "one hundred forty-two million, four hundred twenty-two thousand, one hundred seventy-three".