74742 has 8 divisors (see below), whose sum is σ = 149496. Its totient is φ = 24912.

The previous prime is 74731. The next prime is 74747. The reversal of 74742 is 24747.

It is a sphenic number, since it is the product of 3 distinct primes.

74742 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74742.

It is not an unprimeable number, because it can be changed into a prime (74747) by changing a digit.

74742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6223 + ... + 6234.

It is an arithmetic number, because the mean of its divisors is an integer number (18687).

2⁷⁴⁷⁴² is an apocalyptic number.

74742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74748).

74742 is a wasteful number, since it uses less digits than its factorization.

74742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12462.

The product of its digits is 1568, while the sum is 24.

The square root of 74742 is about 273.3898315593. The cubic root of 74742 is about 42.1232209036.

The spelling of 74742 in words is "seventy-four thousand, seven hundred forty-two", and thus it is an iban number.