16666342 has 16 divisors (see below), whose sum is σ = 31168512. Its totient is φ = 6493320.

The previous prime is 16666319. The next prime is 16666343. The reversal of 16666342 is 24366661.

It is a super-3 number, since 3×16666342³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16666298 and 16666307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666343) 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, 53958 + ... + 54265.

It is an arithmetic number, because the mean of its divisors is an integer number (1948032).

Almost surely, 2^16666342 is an apocalyptic number.

16666342 is a deficient number, since it is larger than the sum of its proper divisors (14502170).

16666342 is a wasteful number, since it uses less digits than its factorization.

16666342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108243.

The product of its digits is 31104, while the sum is 34.

The square root of 16666342 is about 4082.4431410615. The cubic root of 16666342 is about 255.4348188196.

It can be divided in two parts, 1666 and 6342, that added together give a palindrome (8008).

The spelling of 16666342 in words is "sixteen million, six hundred sixty-six thousand, three hundred forty-two".