142116985 has 4 divisors (see below), whose sum is σ = 170540388. Its totient is φ = 113693584.

The previous prime is 142116959. The next prime is 142117033. The reversal of 142116985 is 589611241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 108430569 + 33686416 = 10413^2 + 5804^2 .

It is a cyclic number.

It is not a de Polignac number, because 142116985 - 2¹¹ = 142114937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14211694 + ... + 14211703.

It is an arithmetic number, because the mean of its divisors is an integer number (42635097).

Almost surely, 2^142116985 is an apocalyptic number.

It is an amenable number.

142116985 is a deficient number, since it is larger than the sum of its proper divisors (28423403).

142116985 is an equidigital number, since it uses as much as digits as its factorization.

142116985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28423402.

The product of its digits is 17280, while the sum is 37.

The square root of 142116985 is about 11921.2828588202. The cubic root of 142116985 is about 521.8535735762.

The spelling of 142116985 in words is "one hundred forty-two million, one hundred sixteen thousand, nine hundred eighty-five".