16421230 has 16 divisors (see below), whose sum is σ = 33780960. Its totient is φ = 5630112.

The previous prime is 16421213. The next prime is 16421233. The reversal of 16421230 is 3212461.

It is a junction number, because it is equal to n+sod(n) for n = 16421198 and 16421207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421233) 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, 117225 + ... + 117364.

It is an arithmetic number, because the mean of its divisors is an integer number (2111310).

Almost surely, 2^16421230 is an apocalyptic number.

16421230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16421230 is an abundant number, since it is smaller than the sum of its proper divisors (17359730).

16421230 is a wasteful number, since it uses less digits than its factorization.

16421230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234603.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16421230 is about 4052.3116859393. The cubic root of 16421230 is about 254.1764021473.

Adding to 16421230 its reverse (3212461), we get a palindrome (19633691).

The spelling of 16421230 in words is "sixteen million, four hundred twenty-one thousand, two hundred thirty".