16020145 has 4 divisors (see below), whose sum is σ = 19224180. Its totient is φ = 12816112.

The previous prime is 16020133. The next prime is 16020157. The reversal of 16020145 is 54102061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54102061 = 13 ⋅4161697.

It is an interprime number because it is at equal distance from previous prime (16020133) and next prime (16020157).

It can be written as a sum of positive squares in 2 ways, for example, as 10445824 + 5574321 = 3232^2 + 2361^2 .

It is a cyclic number.

It is not a de Polignac number, because 16020145 - 2⁵ = 16020113 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 3 ways as a sum of consecutive naturals, for example, 1602010 + ... + 1602019.

It is an arithmetic number, because the mean of its divisors is an integer number (4806045).

Almost surely, 2^16020145 is an apocalyptic number.

It is an amenable number.

16020145 is a deficient number, since it is larger than the sum of its proper divisors (3204035).

16020145 is an equidigital number, since it uses as much as digits as its factorization.

16020145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204034.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 16020145 is about 4002.5173328794. The cubic root of 16020145 is about 252.0899202492.

The spelling of 16020145 in words is "sixteen million, twenty thousand, one hundred forty-five".