252042912171 has 20 divisors (see below), whose sum is σ = 377402918464. Its totient is φ = 167629467600.

The previous prime is 252042912133. The next prime is 252042912211. The reversal of 252042912171 is 171219240252.

It is a happy number.

252042912171 is a `hidden beast` number, since 2 + 52 + 0 + 429 + 12 + 171 = 666.

It is not a de Polignac number, because 252042912171 - 2¹³ = 252042903979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252042912131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3661435 + ... + 3729636.

Almost surely, 2^252042912171 is an apocalyptic number.

252042912171 is a deficient number, since it is larger than the sum of its proper divisors (125360006293).

252042912171 is an equidigital number, since it uses as much as digits as its factorization.

252042912171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391504 (or 7391495 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 252042912171 in words is "two hundred fifty-two billion, forty-two million, nine hundred twelve thousand, one hundred seventy-one".