16421027 has 6 divisors (see below), whose sum is σ = 19102068. Its totient is φ = 14075124.

The previous prime is 16421023. The next prime is 16421039. The reversal of 16421027 is 72012461.

16421027 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16421027 - 2² = 16421023 is a prime.

It is a Duffinian number.

16421027 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 16420993 and 16421011.

It is not an unprimeable number, because it can be changed into a prime (16421023) 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, 167513 + ... + 167610.

It is an arithmetic number, because the mean of its divisors is an integer number (3183678).

Almost surely, 2^16421027 is an apocalyptic number.

16421027 is a deficient number, since it is larger than the sum of its proper divisors (2681041).

16421027 is an equidigital number, since it uses as much as digits as its factorization.

16421027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335137 (or 335130 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 16421027 is about 4052.2866384302. The cubic root of 16421027 is about 254.1753547629.

Adding to 16421027 its reverse (72012461), we get a palindrome (88433488).

The spelling of 16421027 in words is "sixteen million, four hundred twenty-one thousand, twenty-seven".