75720242 has 16 divisors (see below), whose sum is σ = 122478720. Its totient is φ = 34901712.

The previous prime is 75720223. The next prime is 75720277. The reversal of 75720242 is 24202757.

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 in 7 ways as a sum of consecutive naturals, for example, 25613 + ... + 28415.

It is an arithmetic number, because the mean of its divisors is an integer number (7654920).

Almost surely, 2^75720242 is an apocalyptic number.

75720242 is a deficient number, since it is larger than the sum of its proper divisors (46758478).

75720242 is a wasteful number, since it uses less digits than its factorization.

75720242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 75720242 is about 8701.7378724023. The cubic root of 75720242 is about 423.0619801241.

Adding to 75720242 its reverse (24202757), we get a palindrome (99922999).

The spelling of 75720242 in words is "seventy-five million, seven hundred twenty thousand, two hundred forty-two".