75242242 has 16 divisors (see below), whose sum is σ = 118974240. Its totient is φ = 35589888.

The previous prime is 75242231. The next prime is 75242249. The reversal of 75242242 is 24224257.

It is a super-2 number, since 2×75242242² = 11322789962373128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75242242.

It is not an unprimeable number, because it can be changed into a prime (75242249) 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 7 ways as a sum of consecutive naturals, for example, 45433 + ... + 47059.

It is an arithmetic number, because the mean of its divisors is an integer number (7435890).

Almost surely, 2^75242242 is an apocalyptic number.

75242242 is a deficient number, since it is larger than the sum of its proper divisors (43731998).

75242242 is a wasteful number, since it uses less digits than its factorization.

75242242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865.

The product of its digits is 8960, while the sum is 28.

The square root of 75242242 is about 8674.2286112369. The cubic root of 75242242 is about 422.1698776240.

Adding to 75242242 its reverse (24224257), we get a palindrome (99466499).

The spelling of 75242242 in words is "seventy-five million, two hundred forty-two thousand, two hundred forty-two".