17142729 has 8 divisors (see below), whose sum is σ = 23474880. Its totient is φ = 11119536.

The previous prime is 17142709. The next prime is 17142773. The reversal of 17142729 is 92724171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17142729 - 2¹² = 17138633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17142729.

It is not an unprimeable number, because it can be changed into a prime (17142709) 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 7 ways as a sum of consecutive naturals, for example, 77109 + ... + 77330.

It is an arithmetic number, because the mean of its divisors is an integer number (2934360).

Almost surely, 2^17142729 is an apocalyptic number.

It is an amenable number.

17142729 is a deficient number, since it is larger than the sum of its proper divisors (6332151).

17142729 is a wasteful number, since it uses less digits than its factorization.

17142729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154479.

The product of its digits is 7056, while the sum is 33.

The square root of 17142729 is about 4140.3778813050. The cubic root of 17142729 is about 257.8457554090.

It can be divided in two parts, 17142 and 729, that added together give a palindrome (17871).

The spelling of 17142729 in words is "seventeen million, one hundred forty-two thousand, seven hundred twenty-nine".