20842195 has 8 divisors (see below), whose sum is σ = 27284400. Its totient is φ = 15157920.

The previous prime is 20842189. The next prime is 20842201. The reversal of 20842195 is 59124802.

It is an interprime number because it is at equal distance from previous prime (20842189) and next prime (20842201).

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

It is not a de Polignac number, because 20842195 - 2⁹ = 20841683 is a prime.

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, 189420 + ... + 189529.

It is an arithmetic number, because the mean of its divisors is an integer number (3410550).

Almost surely, 2^20842195 is an apocalyptic number.

20842195 is a deficient number, since it is larger than the sum of its proper divisors (6442205).

20842195 is a wasteful number, since it uses less digits than its factorization.

20842195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378965.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20842195 is about 4565.3252896152. The cubic root of 20842195 is about 275.1996126490.

Adding to 20842195 its reverse (59124802), we get a palindrome (79966997).

The spelling of 20842195 in words is "twenty million, eight hundred forty-two thousand, one hundred ninety-five".