75945042 has 24 divisors (see below), whose sum is σ = 165197916. Its totient is φ = 25214976.

The previous prime is 75944993. The next prime is 75945047. The reversal of 75945042 is 24054957.

It can be written as a sum of positive squares in 2 ways, for example, as 72948681 + 2996361 = 8541^2 + 1731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75944988 and 75945006.

It is not an unprimeable number, because it can be changed into a prime (75945047) 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 11 ways as a sum of consecutive naturals, for example, 3583 + ... + 12834.

Almost surely, 2^75945042 is an apocalyptic number.

75945042 is an abundant number, since it is smaller than the sum of its proper divisors (89252874).

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

75945042 is a wasteful number, since it uses less digits than its factorization.

75945042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16682 (or 16679 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 75945042 is about 8714.6452595616. The cubic root of 75945042 is about 423.4802318780.

Adding to 75945042 its reverse (24054957), we get a palindrome (99999999).

The spelling of 75945042 in words is "seventy-five million, nine hundred forty-five thousand, forty-two".