16662042 has 12 divisors (see below), whose sum is σ = 36101130. Its totient is φ = 5554008.

The previous prime is 16662011. The next prime is 16662043. The reversal of 16662042 is 24026661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8590761 + 8071281 = 2931^2 + 2841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16661997 and 16662015.

It is not an unprimeable number, because it can be changed into a prime (16662043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462817 + ... + 462852.

Almost surely, 2^16662042 is an apocalyptic number.

16662042 is an abundant number, since it is smaller than the sum of its proper divisors (19439088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16662042 is a wasteful number, since it uses less digits than its factorization.

16662042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925677 (or 925674 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16662042 is about 4081.9164616636. The cubic root of 16662042 is about 255.4128491077.

The spelling of 16662042 in words is "sixteen million, six hundred sixty-two thousand, forty-two".