42171052 has 48 divisors (see below), whose sum is σ = 96026112. Its totient is φ = 15713280.

The previous prime is 42171049. The next prime is 42171053. The reversal of 42171052 is 25017124.

It is a happy number.

42171052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (42171053) 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 15 ways as a sum of consecutive naturals, for example, 4108 + ... + 10060.

It is an arithmetic number, because the mean of its divisors is an integer number (2000544).

Almost surely, 2^42171052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42171052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48013056).

42171052 is an abundant number, since it is smaller than the sum of its proper divisors (53855060).

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

42171052 is a wasteful number, since it uses less digits than its factorization.

42171052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998 (or 5996 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 42171052 is about 6493.9242373160. The cubic root of 42171052 is about 348.0739152457.

Adding to 42171052 its reverse (25017124), we get a palindrome (67188176).

The spelling of 42171052 in words is "forty-two million, one hundred seventy-one thousand, fifty-two".