16942169 has 2 divisors, whose sum is σ = 16942170. Its totient is φ = 16942168.

The previous prime is 16942147. The next prime is 16942187. The reversal of 16942169 is 96124961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15015625 + 1926544 = 3875^2 + 1388^2 .

It is an emirp because it is prime and its reverse (96124961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16942169 - 2¹⁶ = 16876633 is a prime.

It is a super-2 number, since 2×16942169² = 574074180849122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16942109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471084 + 8471085.

It is an arithmetic number, because the mean of its divisors is an integer number (8471085).

Almost surely, 2^16942169 is an apocalyptic number.

It is an amenable number.

16942169 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942169 is an equidigital number, since it uses as much as digits as its factorization.

16942169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 16942169 is about 4116.0866123054. The cubic root of 16942169 is about 256.8362596112.

The spelling of 16942169 in words is "sixteen million, nine hundred forty-two thousand, one hundred sixty-nine".