16421206 has 8 divisors (see below), whose sum is σ = 25928280. Its totient is φ = 7778448.

The previous prime is 16421203. The next prime is 16421213. The reversal of 16421206 is 60212461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216031 + ... + 216106.

It is an arithmetic number, because the mean of its divisors is an integer number (3241035).

Almost surely, 2^16421206 is an apocalyptic number.

16421206 is a deficient number, since it is larger than the sum of its proper divisors (9507074).

16421206 is a wasteful number, since it uses less digits than its factorization.

16421206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432158.

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

The square root of 16421206 is about 4052.3087246655. The cubic root of 16421206 is about 254.1762783191.

Adding to 16421206 its reverse (60212461), we get a palindrome (76633667).

The spelling of 16421206 in words is "sixteen million, four hundred twenty-one thousand, two hundred six".