142806785 has 8 divisors (see below), whose sum is σ = 186947136. Its totient is φ = 103859440.

The previous prime is 142806779. The next prime is 142806803. The reversal of 142806785 is 587608241.

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

It is a de Polignac number, because none of the positive numbers 2^k-142806785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298189 + ... + 1298298.

It is an arithmetic number, because the mean of its divisors is an integer number (23368392).

Almost surely, 2^142806785 is an apocalyptic number.

It is an amenable number.

142806785 is a deficient number, since it is larger than the sum of its proper divisors (44140351).

142806785 is a wasteful number, since it uses less digits than its factorization.

142806785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596503.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 142806785 is about 11950.1792873580. The cubic root of 142806785 is about 522.6965264244.

The spelling of 142806785 in words is "one hundred forty-two million, eight hundred six thousand, seven hundred eighty-five".