17042047 has 4 divisors (see below), whose sum is σ = 18591336. Its totient is φ = 15492760.

The previous prime is 17042029. The next prime is 17042063. The reversal of 17042047 is 74024071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74024071 = 11 ⋅6729461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17042047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17042017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774628 + ... + 774649.

It is an arithmetic number, because the mean of its divisors is an integer number (4647834).

Almost surely, 2^17042047 is an apocalyptic number.

17042047 is a deficient number, since it is larger than the sum of its proper divisors (1549289).

17042047 is a wasteful number, since it uses less digits than its factorization.

17042047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549288.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 17042047 is about 4128.2014243493. The cubic root of 17042047 is about 257.3399740934.

The spelling of 17042047 in words is "seventeen million, forty-two thousand, forty-seven".