142232223 has 16 divisors (see below), whose sum is σ = 219971840. Its totient is φ = 80061696.

The previous prime is 142232221. The next prime is 142232317. The reversal of 142232223 is 322232241.

It is not a de Polignac number, because 142232223 - 2¹ = 142232221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142232223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142232221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49138 + ... + 51951.

It is an arithmetic number, because the mean of its divisors is an integer number (13748240).

Almost surely, 2^142232223 is an apocalyptic number.

142232223 is a deficient number, since it is larger than the sum of its proper divisors (77739617).

142232223 is a wasteful number, since it uses less digits than its factorization.

142232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101166.

The product of its digits is 1152, while the sum is 21.

The square root of 142232223 is about 11926.1151679832. The cubic root of 142232223 is about 521.9945867820.

Adding to 142232223 its reverse (322232241), we get a palindrome (464464464).

The spelling of 142232223 in words is "one hundred forty-two million, two hundred thirty-two thousand, two hundred twenty-three".