75171042 has 48 divisors (see below), whose sum is σ = 173601792. Its totient is φ = 23425920.

The previous prime is 75171029. The next prime is 75171043. The reversal of 75171042 is 24017157.

It is a junction number, because it is equal to n+sod(n) for n = 75170997 and 75171015.

It is not an unprimeable number, because it can be changed into a prime (75171043) 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, 50367 + ... + 51837.

It is an arithmetic number, because the mean of its divisors is an integer number (3616704).

Almost surely, 2^75171042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75171042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86800896).

75171042 is an abundant number, since it is smaller than the sum of its proper divisors (98430750).

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

75171042 is a wasteful number, since it uses less digits than its factorization.

75171042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 75171042 is about 8670.1235285318. The cubic root of 75171042 is about 422.0366723893.

Adding to 75171042 its reverse (24017157), we get a palindrome (99188199).

The spelling of 75171042 in words is "seventy-five million, one hundred seventy-one thousand, forty-two".