100020185 has 8 divisors (see below), whose sum is σ = 121715136. Its totient is φ = 78888880.

The previous prime is 100020149. The next prime is 100020191. The reversal of 100020185 is 581020001.

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

It is not a de Polignac number, because 100020185 - 2⁶ = 100020121 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, 140519 + ... + 141228.

It is an arithmetic number, because the mean of its divisors is an integer number (15214392).

Almost surely, 2^100020185 is an apocalyptic number.

It is an amenable number.

100020185 is a deficient number, since it is larger than the sum of its proper divisors (21694951).

100020185 is an equidigital number, since it uses as much as digits as its factorization.

100020185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281823.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 100020185 is about 10001.0091990759. The cubic root of 100020185 is about 464.1901114171.

Adding to 100020185 its reverse (581020001), we get a palindrome (681040186).

The spelling of 100020185 in words is "one hundred million, twenty thousand, one hundred eighty-five".