142021332223 has 4 divisors (see below), whose sum is σ = 142024936768. Its totient is φ = 142017727680.

The previous prime is 142021332209. The next prime is 142021332241. The reversal of 142021332223 is 322233120241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142021332223 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 (142021332263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742511 + ... + 1822192.

It is an arithmetic number, because the mean of its divisors is an integer number (35506234192).

Almost surely, 2^142021332223 is an apocalyptic number.

142021332223 is a deficient number, since it is larger than the sum of its proper divisors (3604545).

142021332223 is an equidigital number, since it uses as much as digits as its factorization.

142021332223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604544.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 142021332223 its reverse (322233120241), we get a palindrome (464254452464).

The spelling of 142021332223 in words is "one hundred forty-two billion, twenty-one million, three hundred thirty-two thousand, two hundred twenty-three".