16341421 has 4 divisors (see below), whose sum is σ = 16355232. Its totient is φ = 16327612.

The previous prime is 16341401. The next prime is 16341427. The reversal of 16341421 is 12414361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12414361 = 283 ⋅43867.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16341421 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16341392 and 16341401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16341427) 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, 4945 + ... + 7558.

It is an arithmetic number, because the mean of its divisors is an integer number (4088808).

Almost surely, 2^16341421 is an apocalyptic number.

It is an amenable number.

16341421 is a deficient number, since it is larger than the sum of its proper divisors (13811).

16341421 is a wasteful number, since it uses less digits than its factorization.

16341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13810.

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

The square root of 16341421 is about 4042.4523497501. The cubic root of 16341421 is about 253.7639580761.

Adding to 16341421 its reverse (12414361), we get a palindrome (28755782).

The spelling of 16341421 in words is "sixteen million, three hundred forty-one thousand, four hundred twenty-one".