16042849 has 8 divisors (see below), whose sum is σ = 17401608. Its totient is φ = 14730240.

The previous prime is 16042847. The next prime is 16042861. The reversal of 16042849 is 94824061.

It can be written as a sum of positive squares in 4 ways, for example, as 1166400 + 14876449 = 1080^2 + 3857^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16042849 - 2¹ = 16042847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16042847) by changing a digit.

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, 10812 + ... + 12205.

It is an arithmetic number, because the mean of its divisors is an integer number (2175201).

Almost surely, 2^16042849 is an apocalyptic number.

It is an amenable number.

16042849 is a deficient number, since it is larger than the sum of its proper divisors (1358759).

16042849 is a wasteful number, since it uses less digits than its factorization.

16042849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23075.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 16042849 is about 4005.3525437844. The cubic root of 16042849 is about 252.2089526277.

The spelling of 16042849 in words is "sixteen million, forty-two thousand, eight hundred forty-nine".