142142345 has 24 divisors (see below), whose sum is σ = 178997784. Its totient is φ = 108269568.

The previous prime is 142142333. The next prime is 142142353. The reversal of 142142345 is 543241241.

142142345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 44448889 + 97693456 = 6667^2 + 9884^2 .

It is not a de Polignac number, because 142142345 - 2⁸ = 142142089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1465337 + ... + 1465433.

It is an arithmetic number, because the mean of its divisors is an integer number (7458241).

Almost surely, 2^142142345 is an apocalyptic number.

It is an amenable number.

142142345 is a deficient number, since it is larger than the sum of its proper divisors (36855439).

142142345 is an frugal number, since it uses more digits than its factorization.

142142345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 228 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 142142345 is about 11922.3464552914. The cubic root of 142142345 is about 521.8846123703.

Adding to 142142345 its reverse (543241241), we get a palindrome (685383586).

The spelling of 142142345 in words is "one hundred forty-two million, one hundred forty-two thousand, three hundred forty-five".