142320322 has 4 divisors (see below), whose sum is σ = 213480486. Its totient is φ = 71160160.

The previous prime is 142320301. The next prime is 142320337. The reversal of 142320322 is 223023241.

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

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 66438801 = 8711^2 + 8151^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142320322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35580079 + ... + 35580082.

Almost surely, 2^142320322 is an apocalyptic number.

142320322 is a deficient number, since it is larger than the sum of its proper divisors (71160164).

142320322 is an equidigital number, since it uses as much as digits as its factorization.

142320322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71160163.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 142320322 is about 11929.8081292198. The cubic root of 142320322 is about 522.1023394617.

Adding to 142320322 its reverse (223023241), we get a palindrome (365343563).

The spelling of 142320322 in words is "one hundred forty-two million, three hundred twenty thousand, three hundred twenty-two".