75249442 has 16 divisors (see below), whose sum is σ = 115423200. Its totient is φ = 36783648.

The previous prime is 75249409. The next prime is 75249451. The reversal of 75249442 is 24494257.

It is a super-2 number, since 2×75249442² = 11324957042622728, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 16309 + ... + 20407.

It is an arithmetic number, because the mean of its divisors is an integer number (7213950).

Almost surely, 2^75249442 is an apocalyptic number.

75249442 is a deficient number, since it is larger than the sum of its proper divisors (40173758).

75249442 is a wasteful number, since it uses less digits than its factorization.

75249442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305.

The product of its digits is 80640, while the sum is 37.

The square root of 75249442 is about 8674.6436238038. The cubic root of 75249442 is about 422.1833431370.

The spelling of 75249442 in words is "seventy-five million, two hundred forty-nine thousand, four hundred forty-two".