17242987 has 2 divisors, whose sum is σ = 17242988. Its totient is φ = 17242986.

The previous prime is 17242969. The next prime is 17242993. The reversal of 17242987 is 78924271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17242987 - 2⁷ = 17242859 is a prime.

It is not a weakly prime, because it can be changed into another prime (17242187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8621493 + 8621494.

It is an arithmetic number, because the mean of its divisors is an integer number (8621494).

Almost surely, 2^17242987 is an apocalyptic number.

17242987 is a deficient number, since it is larger than the sum of its proper divisors (1).

17242987 is an equidigital number, since it uses as much as digits as its factorization.

17242987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 17242987 is about 4152.4675796447. The cubic root of 17242987 is about 258.3474426795.

The spelling of 17242987 in words is "seventeen million, two hundred forty-two thousand, nine hundred eighty-seven".