17142385 has 8 divisors (see below), whose sum is σ = 22153320. Its totient is φ = 12658944.

The previous prime is 17142361. The next prime is 17142401. The reversal of 17142385 is 58324171.

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 16900321 = 492^2 + 4111^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17142385 is a prime.

It is a super-2 number, since 2×17142385² = 587722726976450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131800 + ... + 131929.

It is an arithmetic number, because the mean of its divisors is an integer number (2769165).

Almost surely, 2^17142385 is an apocalyptic number.

It is an amenable number.

17142385 is a deficient number, since it is larger than the sum of its proper divisors (5010935).

17142385 is a wasteful number, since it uses less digits than its factorization.

17142385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263747.

The product of its digits is 6720, while the sum is 31.

The square root of 17142385 is about 4140.3363389947. The cubic root of 17142385 is about 257.8440306829.

The spelling of 17142385 in words is "seventeen million, one hundred forty-two thousand, three hundred eighty-five".