75306885242 has 16 divisors (see below), whose sum is σ = 114402537000. Its totient is φ = 37173987840.

The previous prime is 75306885239. The next prime is 75306885257. The reversal of 75306885242 is 24258860357.

It is a Cunningham number, because it is equal to 274421²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 75283835641 + 23049601 = 274379^2 + 4801^2 .

It is a super-2 number, since 2×75306885242² (a number of 23 digits) contains 22 as substring.

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, 202367 + ... + 437682.

Almost surely, 2^75306885242 is an apocalyptic number.

75306885242 is a deficient number, since it is larger than the sum of its proper divisors (39095651758).

75306885242 is a wasteful number, since it uses less digits than its factorization.

75306885242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640801.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 75306885242 in words is "seventy-five billion, three hundred six million, eight hundred eighty-five thousand, two hundred forty-two".