142134085 has 8 divisors (see below), whose sum is σ = 174721176. Its totient is φ = 110933760.

The previous prime is 142134073. The next prime is 142134103. The reversal of 142134085 is 580431241.

It is a Cunningham number, because it is equal to 11922²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 142134084 = 1^2 + 11922^2 .

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

It is not a de Polignac number, because 142134085 - 2⁵ = 142134053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346464 + ... + 346873.

It is an arithmetic number, because the mean of its divisors is an integer number (21840147).

Almost surely, 2^142134085 is an apocalyptic number.

It is an amenable number.

142134085 is a deficient number, since it is larger than the sum of its proper divisors (32587091).

142134085 is an equidigital number, since it uses as much as digits as its factorization.

142134085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693383.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 142134085 is about 11922.0000419393. Note that the first 4 decimals coincide. The cubic root of 142134085 is about 521.8745031370.

The spelling of 142134085 in words is "one hundred forty-two million, one hundred thirty-four thousand, eighty-five".