171142280 has 16 divisors (see below), whose sum is σ = 385070220. Its totient is φ = 68456896.

The previous prime is 171142273. The next prime is 171142313. The reversal of 171142280 is 82241171.

It can be written as a sum of positive squares in 2 ways, for example, as 158709604 + 12432676 = 12598^2 + 3526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139239 + ... + 2139318.

Almost surely, 2^171142280 is an apocalyptic number.

171142280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171142280 is an abundant number, since it is smaller than the sum of its proper divisors (213927940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171142280 is a wasteful number, since it uses less digits than its factorization.

171142280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278568 (or 4278564 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 171142280 is about 13082.1359112341. The cubic root of 171142280 is about 555.2038101126.

The spelling of 171142280 in words is "one hundred seventy-one million, one hundred forty-two thousand, two hundred eighty".