171253242 has 48 divisors (see below), whose sum is σ = 389256192. Its totient is φ = 54349920.

The previous prime is 171253241. The next prime is 171253283. The reversal of 171253242 is 242352171.

171253242 is a `hidden beast` number, since 171 + 253 + 242 = 666.

It is not an unprimeable number, because it can be changed into a prime (171253241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28567 + ... + 34037.

It is an arithmetic number, because the mean of its divisors is an integer number (8109504).

Almost surely, 2^171253242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171253242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194628096).

171253242 is an abundant number, since it is smaller than the sum of its proper divisors (218002950).

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

171253242 is a wasteful number, since it uses less digits than its factorization.

171253242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563 (or 5560 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 171253242 is about 13086.3761981688. The cubic root of 171253242 is about 555.3237750438.

The spelling of 171253242 in words is "one hundred seventy-one million, two hundred fifty-three thousand, two hundred forty-two".