16042261 has 4 divisors (see below), whose sum is σ = 16262092. Its totient is φ = 15822432.

The previous prime is 16042241. The next prime is 16042291. The reversal of 16042261 is 16224061.

16042261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16224061 = 7 ⋅2317723.

It can be written as a sum of positive squares in 2 ways, for example, as 12780625 + 3261636 = 3575^2 + 1806^2 .

It is a cyclic number.

It is not a de Polignac number, because 16042261 - 2⁹ = 16041749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16042231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109806 + ... + 109951.

It is an arithmetic number, because the mean of its divisors is an integer number (4065523).

Almost surely, 2^16042261 is an apocalyptic number.

It is an amenable number.

16042261 is a deficient number, since it is larger than the sum of its proper divisors (219831).

16042261 is an equidigital number, since it uses as much as digits as its factorization.

16042261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219830.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 16042261 is about 4005.2791413333. The cubic root of 16042261 is about 252.2058712823.

The spelling of 16042261 in words is "sixteen million, forty-two thousand, two hundred sixty-one".