75171942 has 64 divisors (see below), whose sum is σ = 180230400. Its totient is φ = 23146560.

The previous prime is 75171937. The next prime is 75172039. The reversal of 75171942 is 24917157.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 75171897 and 75171906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41173 + ... + 42959.

It is an arithmetic number, because the mean of its divisors is an integer number (2816100).

Almost surely, 2^75171942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75171942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90115200).

75171942 is an abundant number, since it is smaller than the sum of its proper divisors (105058458).

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

75171942 is a wasteful number, since it uses less digits than its factorization.

75171942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1852 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 75171942 is about 8670.1754307511. The cubic root of 75171942 is about 422.0383566882.

The spelling of 75171942 in words is "seventy-five million, one hundred seventy-one thousand, nine hundred forty-two".