16042861 has 2 divisors, whose sum is σ = 16042862. Its totient is φ = 16042860.

The previous prime is 16042847. The next prime is 16042879. The reversal of 16042861 is 16824061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 281961 = 3970^2 + 531^2 .

It is an emirp because it is prime and its reverse (16824061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16042861 - 2²¹ = 13945709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16042801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8021430 + 8021431.

It is an arithmetic number, because the mean of its divisors is an integer number (8021431).

Almost surely, 2^16042861 is an apocalyptic number.

It is an amenable number.

16042861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16042861 is an equidigital number, since it uses as much as digits as its factorization.

16042861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 16042861 is about 4005.3540417796. The cubic root of 16042861 is about 252.2090155115.

It can be divided in two parts, 1604 and 2861, that added together give a triangular number (4465 = T₉₄).

The spelling of 16042861 in words is "sixteen million, forty-two thousand, eight hundred sixty-one".