16420171 has 2 divisors, whose sum is σ = 16420172. Its totient is φ = 16420170.

The previous prime is 16420153. The next prime is 16420189. The reversal of 16420171 is 17102461.

It is a balanced prime because it is at equal distance from previous prime (16420153) and next prime (16420189).

It is a cyclic number.

It is not a de Polignac number, because 16420171 - 2⁷ = 16420043 is a prime.

It is equal to p_1056352 and since 16420171 and 1056352 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16420121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210085 + 8210086.

It is an arithmetic number, because the mean of its divisors is an integer number (8210086).

Almost surely, 2^16420171 is an apocalyptic number.

16420171 is a deficient number, since it is larger than the sum of its proper divisors (1).

16420171 is an equidigital number, since it uses as much as digits as its factorization.

16420171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 16420171 is about 4052.1810176743. The cubic root of 16420171 is about 254.1709381109.

The spelling of 16420171 in words is "sixteen million, four hundred twenty thousand, one hundred seventy-one".