142441223 has 4 divisors (see below), whose sum is σ = 143466120. Its totient is φ = 141416328.

The previous prime is 142441213. The next prime is 142441259. The reversal of 142441223 is 322144241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322144241 = 67 ⋅4808123.

It is a cyclic number.

It is not a de Polignac number, because 142441223 - 2¹⁴ = 142424839 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 (142441213) 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, 512240 + ... + 512517.

It is an arithmetic number, because the mean of its divisors is an integer number (35866530).

Almost surely, 2^142441223 is an apocalyptic number.

142441223 is a deficient number, since it is larger than the sum of its proper divisors (1024897).

142441223 is a wasteful number, since it uses less digits than its factorization.

142441223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024896.

The product of its digits is 1536, while the sum is 23.

The square root of 142441223 is about 11934.8742347794. The cubic root of 142441223 is about 522.2501394579.

Adding to 142441223 its reverse (322144241), we get a palindrome (464585464).

The spelling of 142441223 in words is "one hundred forty-two million, four hundred forty-one thousand, two hundred twenty-three".