171140402 has 8 divisors (see below), whose sum is σ = 257832300. Its totient is φ = 85196304.

The previous prime is 171140399. The next prime is 171140407. The reversal of 171140402 is 204041171.

It can be written as a sum of positive squares in 2 ways, for example, as 170328601 + 811801 = 13051^2 + 901^2 .

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

It is not an unprimeable number, because it can be changed into a prime (171140407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186377 + ... + 187292.

Almost surely, 2^171140402 is an apocalyptic number.

171140402 is a deficient number, since it is larger than the sum of its proper divisors (86691898).

171140402 is a wasteful number, since it uses less digits than its factorization.

171140402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373900.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 171140402 is about 13082.0641337673. The cubic root of 171140402 is about 555.2017792944.

Adding to 171140402 its reverse (204041171), we get a palindrome (375181573).

The spelling of 171140402 in words is "one hundred seventy-one million, one hundred forty thousand, four hundred two".