75818042 has 4 divisors (see below), whose sum is σ = 113727066. Its totient is φ = 37909020.

The previous prime is 75817981. The next prime is 75818063. The reversal of 75818042 is 24081857.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24081857 = 37 ⋅650861.

It can be written as a sum of positive squares in only one way, i.e., 63504961 + 12313081 = 7969^2 + 3509^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75817993 and 75818011.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18954509 + ... + 18954512.

Almost surely, 2^75818042 is an apocalyptic number.

75818042 is a deficient number, since it is larger than the sum of its proper divisors (37909024).

75818042 is a wasteful number, since it uses less digits than its factorization.

75818042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37909023.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 75818042 is about 8707.3556261359. The cubic root of 75818042 is about 423.2440435542.

Adding to 75818042 its reverse (24081857), we get a palindrome (99899899).

The spelling of 75818042 in words is "seventy-five million, eight hundred eighteen thousand, forty-two".