142808185 has 8 divisors (see below), whose sum is σ = 184552200. Its totient is φ = 105458304.

The previous prime is 142808167. The next prime is 142808201. The reversal of 142808185 is 581808241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19686969 + 123121216 = 4437^2 + 11096^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142808185 - 2⁹ = 142807673 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1098460 + ... + 1098589.

It is an arithmetic number, because the mean of its divisors is an integer number (23069025).

Almost surely, 2^142808185 is an apocalyptic number.

It is an amenable number.

142808185 is a deficient number, since it is larger than the sum of its proper divisors (41744015).

142808185 is a wasteful number, since it uses less digits than its factorization.

142808185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197067.

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 142808185 is about 11950.2378637415. The cubic root of 142808185 is about 522.6982344962.

The spelling of 142808185 in words is "one hundred forty-two million, eight hundred eight thousand, one hundred eighty-five".