142212223 has 8 divisors (see below), whose sum is σ = 145992528. Its totient is φ = 138453504.

The previous prime is 142212199. The next prime is 142212233. The reversal of 142212223 is 322212241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142212223 - 2⁹ = 142211711 is a prime.

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 142212223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142212233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8415 + ... + 18847.

It is an arithmetic number, because the mean of its divisors is an integer number (18249066).

Almost surely, 2^142212223 is an apocalyptic number.

142212223 is a deficient number, since it is larger than the sum of its proper divisors (3780305).

142212223 is a wasteful number, since it uses less digits than its factorization.

142212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793.

The product of its digits is 384, while the sum is 19.

The square root of 142212223 is about 11925.2766424935. The cubic root of 142212223 is about 521.9701188593.

Adding to 142212223 its reverse (322212241), we get a palindrome (464424464).

The spelling of 142212223 in words is "one hundred forty-two million, two hundred twelve thousand, two hundred twenty-three".