169142285 has 8 divisors (see below), whose sum is σ = 218583960. Its totient is φ = 124905024.

The previous prime is 169142279. The next prime is 169142317. The reversal of 169142285 is 582241961.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 168532324 = 781^2 + 12982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 169142285 - 2⁴ = 169142269 is a prime.

It is a super-2 number, since 2×169142285² = 57218225150042450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1301030 + ... + 1301159.

It is an arithmetic number, because the mean of its divisors is an integer number (27322995).

Almost surely, 2^169142285 is an apocalyptic number.

It is an amenable number.

169142285 is a deficient number, since it is larger than the sum of its proper divisors (49441675).

169142285 is a wasteful number, since it uses less digits than its factorization.

169142285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602207.

The product of its digits is 34560, while the sum is 38.

The square root of 169142285 is about 13005.4713486286. The cubic root of 169142285 is about 553.0325979474.

The spelling of 169142285 in words is "one hundred sixty-nine million, one hundred forty-two thousand, two hundred eighty-five".