75742 has 4 divisors (see below), whose sum is σ = 113616. Its totient is φ = 37870.

The previous prime is 75731. The next prime is 75743. The reversal of 75742 is 24757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24757 = 19 ⋅1303.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75743) by changing a digit.

75742 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 18934 + ... + 18937.

It is an arithmetic number, because the mean of its divisors is an integer number (28404).

2⁷⁵⁷⁴² is an apocalyptic number.

75742 is a deficient number, since it is larger than the sum of its proper divisors (37874).

75742 is a wasteful number, since it uses less digits than its factorization.

75742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37873.

The product of its digits is 1960, while the sum is 25.

The square root of 75742 is about 275.2126450583. The cubic root of 75742 is about 42.3102498136.

The spelling of 75742 in words is "seventy-five thousand, seven hundred forty-two".