142725985 has 4 divisors (see below), whose sum is σ = 171271188. Its totient is φ = 114180784.

The previous prime is 142725977. The next prime is 142725991. The reversal of 142725985 is 589527241.

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 90554256 + 52171729 = 9516^2 + 7223^2 .

It is a cyclic number.

It is not a de Polignac number, because 142725985 - 2³ = 142725977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14272594 + ... + 14272603.

It is an arithmetic number, because the mean of its divisors is an integer number (42817797).

Almost surely, 2^142725985 is an apocalyptic number.

It is an amenable number.

142725985 is a deficient number, since it is larger than the sum of its proper divisors (28545203).

142725985 is an equidigital number, since it uses as much as digits as its factorization.

142725985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28545202.

The product of its digits is 201600, while the sum is 43.

The square root of 142725985 is about 11946.7981066058. The cubic root of 142725985 is about 522.5979273577.

The spelling of 142725985 in words is "one hundred forty-two million, seven hundred twenty-five thousand, nine hundred eighty-five".