16942481 has 2 divisors, whose sum is σ = 16942482. Its totient is φ = 16942480.

The previous prime is 16942463. The next prime is 16942483. The reversal of 16942481 is 18424961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10182481 + 6760000 = 3191^2 + 2600^2 .

It is an emirp because it is prime and its reverse (18424961) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16942481 is a prime.

It is a super-2 number, since 2×16942481² = 574095324870722, which contains 22 as substring.

Together with 16942483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16942483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471240 + 8471241.

It is an arithmetic number, because the mean of its divisors is an integer number (8471241).

Almost surely, 2^16942481 is an apocalyptic number.

It is an amenable number.

16942481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942481 is an equidigital number, since it uses as much as digits as its factorization.

16942481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 16942481 is about 4116.1245122081. The cubic root of 16942481 is about 256.8378361984.

The spelling of 16942481 in words is "sixteen million, nine hundred forty-two thousand, four hundred eighty-one".