75443642 has 16 divisors (see below), whose sum is σ = 119520960. Its totient is φ = 35616672.

The previous prime is 75443633. The next prime is 75443647. The reversal of 75443642 is 24634457.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (75443647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8723 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (7470060).

Almost surely, 2^75443642 is an apocalyptic number.

75443642 is a deficient number, since it is larger than the sum of its proper divisors (44077318).

75443642 is a wasteful number, since it uses less digits than its factorization.

75443642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677.

The product of its digits is 80640, while the sum is 35.

The square root of 75443642 is about 8685.8299545870. The cubic root of 75443642 is about 422.5462143815.

The spelling of 75443642 in words is "seventy-five million, four hundred forty-three thousand, six hundred forty-two".