75172042 has 16 divisors (see below), whose sum is σ = 124696512. Its totient is φ = 33700320.

The previous prime is 75172039. The next prime is 75172067. The reversal of 75172042 is 24027157.

It is a self number, because there is not a number n which added to its sum of digits gives 75172042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21798 + ... + 25009.

It is an arithmetic number, because the mean of its divisors is an integer number (7793532).

Almost surely, 2^75172042 is an apocalyptic number.

75172042 is a deficient number, since it is larger than the sum of its proper divisors (49524470).

75172042 is a wasteful number, since it uses less digits than its factorization.

75172042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46893.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 75172042 is about 8670.1811976452. The cubic root of 75172042 is about 422.0385438316.

Adding to 75172042 its reverse (24027157), we get a palindrome (99199199).

It can be divided in two parts, 7517 and 2042, that added together give a palindrome (9559).

The spelling of 75172042 in words is "seventy-five million, one hundred seventy-two thousand, forty-two".