40742 has 8 divisors (see below), whose sum is σ = 65856. Its totient is φ = 18792.

The previous prime is 40739. The next prime is 40751. The reversal of 40742 is 24704.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40742.

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 40742.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (8232).

2⁴⁰⁷⁴² is an apocalyptic number.

40742 is a deficient number, since it is larger than the sum of its proper divisors (25114).

40742 is a wasteful number, since it uses less digits than its factorization.

40742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 40742 is about 201.8464763131. The cubic root of 40742 is about 34.4096916987.

The spelling of 40742 in words is "forty thousand, seven hundred forty-two", and thus it is an iban number.