16668342 has 24 divisors (see below), whose sum is σ = 37453416. Its totient is φ = 5555952.

The previous prime is 16668331. The next prime is 16668343. The reversal of 16668342 is 24386661.

It is a junction number, because it is equal to n+sod(n) for n = 16668297 and 16668306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16663 + ... + 17634.

It is an arithmetic number, because the mean of its divisors is an integer number (1560559).

Almost surely, 2^16668342 is an apocalyptic number.

16668342 is an abundant number, since it is smaller than the sum of its proper divisors (20785074).

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

16668342 is an equidigital number, since it uses as much as digits as its factorization.

16668342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34314 (or 34302 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 16668342 is about 4082.6880850734. The cubic root of 16668342 is about 255.4450360027.

The spelling of 16668342 in words is "sixteen million, six hundred sixty-eight thousand, three hundred forty-two".