142608985 has 4 divisors (see below), whose sum is σ = 171130788. Its totient is φ = 114087184.

The previous prime is 142608953. The next prime is 142608997. The reversal of 142608985 is 589806241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589806241 = 1669 ⋅353389.

It can be written as a sum of positive squares in 2 ways, for example, as 77387209 + 65221776 = 8797^2 + 8076^2 .

It is a cyclic number.

It is not a de Polignac number, because 142608985 - 2⁵ = 142608953 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, 14260894 + ... + 14260903.

It is an arithmetic number, because the mean of its divisors is an integer number (42782697).

Almost surely, 2^142608985 is an apocalyptic number.

It is an amenable number.

142608985 is a deficient number, since it is larger than the sum of its proper divisors (28521803).

142608985 is an equidigital number, since it uses as much as digits as its factorization.

142608985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28521802.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 142608985 is about 11941.9003931535. The cubic root of 142608985 is about 522.4550879797.

The spelling of 142608985 in words is "one hundred forty-two million, six hundred eight thousand, nine hundred eighty-five".