43742 has 4 divisors (see below), whose sum is σ = 65616. Its totient is φ = 21870.

The previous prime is 43721. The next prime is 43753. The reversal of 43742 is 24734.

It is a happy number.

43742 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

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 43742.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10934 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (16404).

2⁴³⁷⁴² is an apocalyptic number.

43742 is a deficient number, since it is larger than the sum of its proper divisors (21874).

43742 is a wasteful number, since it uses less digits than its factorization.

43742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21873.

The product of its digits is 672, while the sum is 20.

The square root of 43742 is about 209.1458821015. The cubic root of 43742 is about 35.2343457812.

The spelling of 43742 in words is "forty-three thousand, seven hundred forty-two", and thus it is an iban number.