16421426 has 8 divisors (see below), whose sum is σ = 28151040. Its totient is φ = 7037748.

The previous prime is 16421417. The next prime is 16421429. The reversal of 16421426 is 62412461.

16421426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16421395 and 16421404.

It is not an unprimeable number, because it can be changed into a prime (16421429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586466 + ... + 586493.

It is an arithmetic number, because the mean of its divisors is an integer number (3518880).

Almost surely, 2^16421426 is an apocalyptic number.

16421426 is a deficient number, since it is larger than the sum of its proper divisors (11729614).

16421426 is a wasteful number, since it uses less digits than its factorization.

16421426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172968.

The product of its digits is 2304, while the sum is 26.

The square root of 16421426 is about 4052.3358695942. The cubic root of 16421426 is about 254.1774134069.

Adding to 16421426 its reverse (62412461), we get a palindrome (78833887).

The spelling of 16421426 in words is "sixteen million, four hundred twenty-one thousand, four hundred twenty-six".