142322423 has 4 divisors (see below), whose sum is σ = 143443200. Its totient is φ = 141201648.

The previous prime is 142322399. The next prime is 142322443. The reversal of 142322423 is 324223241.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-142322423 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 (142322443) 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, 560198 + ... + 560451.

It is an arithmetic number, because the mean of its divisors is an integer number (35860800).

Almost surely, 2^142322423 is an apocalyptic number.

142322423 is a deficient number, since it is larger than the sum of its proper divisors (1120777).

142322423 is a wasteful number, since it uses less digits than its factorization.

142322423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120776.

The product of its digits is 2304, while the sum is 23.

The square root of 142322423 is about 11929.8961856338. The cubic root of 142322423 is about 522.1049086231.

Adding to 142322423 its reverse (324223241), we get a palindrome (466545664).

The spelling of 142322423 in words is "one hundred forty-two million, three hundred twenty-two thousand, four hundred twenty-three".