16842065 has 4 divisors (see below), whose sum is σ = 20210484. Its totient is φ = 13473648.

The previous prime is 16842061. The next prime is 16842071. The reversal of 16842065 is 56024861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56024861 = 593 ⋅94477.

It can be written as a sum of positive squares in 2 ways, for example, as 4682896 + 12159169 = 2164^2 + 3487^2 .

It is a cyclic number.

It is not a de Polignac number, because 16842065 - 2² = 16842061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16842061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1684202 + ... + 1684211.

It is an arithmetic number, because the mean of its divisors is an integer number (5052621).

Almost surely, 2^16842065 is an apocalyptic number.

It is an amenable number.

16842065 is a deficient number, since it is larger than the sum of its proper divisors (3368419).

16842065 is an equidigital number, since it uses as much as digits as its factorization.

16842065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368418.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 16842065 is about 4103.9085028787. The cubic root of 16842065 is about 256.3294150051.

It can be divided in two parts, 168 and 42065, that multiplied together give a triangular number (7066920 = T₃₇₅₉).

The spelling of 16842065 in words is "sixteen million, eight hundred forty-two thousand, sixty-five".