16120045 has 4 divisors (see below), whose sum is σ = 19344060. Its totient is φ = 12896032.

The previous prime is 16119989. The next prime is 16120051. The reversal of 16120045 is 54002161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54002161 = 19 ⋅2842219.

It can be written as a sum of positive squares in 2 ways, for example, as 5322249 + 10797796 = 2307^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 16120045 - 2¹³ = 16111853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612000 + ... + 1612009.

It is an arithmetic number, because the mean of its divisors is an integer number (4836015).

Almost surely, 2^16120045 is an apocalyptic number.

It is an amenable number.

16120045 is a deficient number, since it is larger than the sum of its proper divisors (3224015).

16120045 is an equidigital number, since it uses as much as digits as its factorization.

16120045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224014.

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

The square root of 16120045 is about 4014.9775839972. The cubic root of 16120045 is about 252.6128371932.

The spelling of 16120045 in words is "sixteen million, one hundred twenty thousand, forty-five".