40743 has 10 divisors (see below), whose sum is σ = 60984. Its totient is φ = 27108.

The previous prime is 40739. The next prime is 40751. The reversal of 40743 is 34704.

It is not a de Polignac number, because 40743 - 2² = 40739 is a prime.

It is an Ulam number.

40743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40763) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 171 + ... + 332.

2⁴⁰⁷⁴³ is an apocalyptic number.

40743 is a deficient number, since it is larger than the sum of its proper divisors (20241).

40743 is an equidigital number, since it uses as much as digits as its factorization.

40743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40743 is about 201.8489534281. The cubic root of 40743 is about 34.4099732215.

The spelling of 40743 in words is "forty thousand, seven hundred forty-three", and thus it is an iban number.