16422641 has 2 divisors, whose sum is σ = 16422642. Its totient is φ = 16422640.

The previous prime is 16422617. The next prime is 16422647. The reversal of 16422641 is 14622461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 390625 = 4004^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 16422641 - 2¹⁸ = 16160497 is a prime.

It is a Chen prime.

It is equal to p_1056509 and since 16422641 and 1056509 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16422641.

It is not a weakly prime, because it can be changed into another prime (16422647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211320 + 8211321.

It is an arithmetic number, because the mean of its divisors is an integer number (8211321).

Almost surely, 2^16422641 is an apocalyptic number.

It is an amenable number.

16422641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16422641 is an equidigital number, since it uses as much as digits as its factorization.

16422641 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16422641 is about 4052.4857803575. The cubic root of 16422641 is about 254.1836820046.

The spelling of 16422641 in words is "sixteen million, four hundred twenty-two thousand, six hundred forty-one".