142200505 has 8 divisors (see below), whose sum is σ = 174802824. Its totient is φ = 110985600.

The previous prime is 142200493. The next prime is 142200511. The reversal of 142200505 is 505002241.

It can be written as a sum of positive squares in 4 ways, for example, as 16670889 + 125529616 = 4083^2 + 11204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-142200505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346626 + ... + 347035.

It is an arithmetic number, because the mean of its divisors is an integer number (21850353).

Almost surely, 2^142200505 is an apocalyptic number.

It is an amenable number.

142200505 is a deficient number, since it is larger than the sum of its proper divisors (32602319).

142200505 is an equidigital number, since it uses as much as digits as its factorization.

142200505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693707.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 142200505 is about 11924.7853230153. The cubic root of 142200505 is about 521.9557820376.

Adding to 142200505 its reverse (505002241), we get a palindrome (647202746).

The spelling of 142200505 in words is "one hundred forty-two million, two hundred thousand, five hundred five".