142445223 has 20 divisors (see below), whose sum is σ = 223990360. Its totient is φ = 89964432.

The previous prime is 142445209. The next prime is 142445231. The reversal of 142445223 is 322544241.

It is not a de Polignac number, because 142445223 - 2⁴ = 142445207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142445273) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44740 + ... + 47817.

It is an arithmetic number, because the mean of its divisors is an integer number (11199518).

Almost surely, 2^142445223 is an apocalyptic number.

142445223 is a deficient number, since it is larger than the sum of its proper divisors (81545137).

142445223 is an equidigital number, since it uses as much as digits as its factorization.

142445223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92588 (or 92579 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 142445223 is about 11935.0418097299. The cubic root of 142445223 is about 522.2550279795.

Adding to 142445223 its reverse (322544241), we get a palindrome (464989464).

The spelling of 142445223 in words is "one hundred forty-two million, four hundred forty-five thousand, two hundred twenty-three".