142340225 has 24 divisors (see below), whose sum is σ = 180821760. Its totient is φ = 111121920.

The previous prime is 142340213. The next prime is 142340257. The reversal of 142340225 is 522043241.

It is a happy number.

It is not a de Polignac number, because 142340225 - 2⁸ = 142339969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142340225.

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 in 23 ways as a sum of consecutive naturals, for example, 191204 + ... + 191946.

It is an arithmetic number, because the mean of its divisors is an integer number (7534240).

Almost surely, 2^142340225 is an apocalyptic number.

It is an amenable number.

142340225 is a deficient number, since it is larger than the sum of its proper divisors (38481535).

142340225 is an equidigital number, since it uses as much as digits as its factorization.

142340225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142340225 is about 11930.6422710598. The cubic root of 142340225 is about 522.1266763902.

Adding to 142340225 its reverse (522043241), we get a palindrome (664383466).

The spelling of 142340225 in words is "one hundred forty-two million, three hundred forty thousand, two hundred twenty-five".