16042643 has 2 divisors, whose sum is σ = 16042644. Its totient is φ = 16042642.

The previous prime is 16042639. The next prime is 16042667. The reversal of 16042643 is 34624061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16042643 - 2² = 16042639 is a prime.

It is not a weakly prime, because it can be changed into another prime (16042613) 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 as a sum of consecutive naturals, namely, 8021321 + 8021322.

It is an arithmetic number, because the mean of its divisors is an integer number (8021322).

Almost surely, 2^16042643 is an apocalyptic number.

16042643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16042643 is an equidigital number, since it uses as much as digits as its factorization.

16042643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 16042643 is about 4005.3268281128. The cubic root of 16042643 is about 252.2078731173.

The spelling of 16042643 in words is "sixteen million, forty-two thousand, six hundred forty-three".