16665242 has 16 divisors (see below), whose sum is σ = 28706400. Its totient is φ = 7176240.

The previous prime is 16665241. The next prime is 16665247. The reversal of 16665242 is 24256661.

It is a junction number, because it is equal to n+sod(n) for n = 16665199 and 16665208.

It is not an unprimeable number, because it can be changed into a prime (16665241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19517 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (1794150).

Almost surely, 2^16665242 is an apocalyptic number.

16665242 is a deficient number, since it is larger than the sum of its proper divisors (12041158).

16665242 is a wasteful number, since it uses less digits than its factorization.

16665242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39901.

The product of its digits is 17280, while the sum is 32.

The square root of 16665242 is about 4082.3084155904. The cubic root of 16665242 is about 255.4291990204.

The spelling of 16665242 in words is "sixteen million, six hundred sixty-five thousand, two hundred forty-two".