73742 has 4 divisors (see below), whose sum is σ = 110616. Its totient is φ = 36870.

The previous prime is 73727. The next prime is 73751. The reversal of 73742 is 24737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24737 = 29 ⋅853.

It is a congruent number.

It is an unprimeable number.

73742 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 (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18434 + ... + 18437.

It is an arithmetic number, because the mean of its divisors is an integer number (27654).

2⁷³⁷⁴² is an apocalyptic number.

73742 is a deficient number, since it is larger than the sum of its proper divisors (36874).

73742 is a wasteful number, since it uses less digits than its factorization.

73742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36873.

The product of its digits is 1176, while the sum is 23.

The square root of 73742 is about 271.5547826867. The cubic root of 73742 is about 41.9345162467.

The spelling of 73742 in words is "seventy-three thousand, seven hundred forty-two", and thus it is an iban number.