171427842 has 48 divisors (see below), whose sum is σ = 400102560. Its totient is φ = 52871616.

The previous prime is 171427807. The next prime is 171427843. The reversal of 171427842 is 248724171.

171427842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 171427797 and 171427806.

It is not an unprimeable number, because it can be changed into a prime (171427843) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8878 + ... + 20534.

It is an arithmetic number, because the mean of its divisors is an integer number (8335470).

Almost surely, 2^171427842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171427842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200051280).

171427842 is an abundant number, since it is smaller than the sum of its proper divisors (228674718).

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

171427842 is a wasteful number, since it uses less digits than its factorization.

171427842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11727 (or 11724 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 171427842 is about 13093.0455586162. The cubic root of 171427842 is about 555.5124363838.

The spelling of 171427842 in words is "one hundred seventy-one million, four hundred twenty-seven thousand, eight hundred forty-two".