75304242 has 112 divisors (see below), whose sum is σ = 190050840. Its totient is φ = 22208256.

The previous prime is 75304219. The next prime is 75304259. The reversal of 75304242 is 24240357.

It can be written as a sum of positive squares in 4 ways, for example, as 55935441 + 19368801 = 7479^2 + 4401^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 549598 + ... + 549734.

Almost surely, 2^75304242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75304242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95025420).

75304242 is an abundant number, since it is smaller than the sum of its proper divisors (114746598).

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

75304242 is a wasteful number, since it uses less digits than its factorization.

75304242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 75304242 is about 8677.8016801492. The cubic root of 75304242 is about 422.2858025162.

Adding to 75304242 its reverse (24240357), we get a palindrome (99544599).

The spelling of 75304242 in words is "seventy-five million, three hundred four thousand, two hundred forty-two".