142320224 has 12 divisors (see below), whose sum is σ = 280193004. Its totient is φ = 71160096.

The previous prime is 142320193. The next prime is 142320247. The reversal of 142320224 is 422023241.

It is a junction number, because it is equal to n+sod(n) for n = 142320196 and 142320205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223722 + ... + 2223785.

It is an arithmetic number, because the mean of its divisors is an integer number (23349417).

Almost surely, 2^142320224 is an apocalyptic number.

It is an amenable number.

142320224 is a deficient number, since it is larger than the sum of its proper divisors (137872780).

142320224 is an equidigital number, since it uses as much as digits as its factorization.

142320224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447517 (or 4447509 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142320224 is about 11929.8040218605. The cubic root of 142320224 is about 522.1022196239.

Adding to 142320224 its reverse (422023241), we get a palindrome (564343465).

The spelling of 142320224 in words is "one hundred forty-two million, three hundred twenty thousand, two hundred twenty-four".