42442743 has 8 divisors (see below), whose sum is σ = 64674688. Its totient is φ = 24252984.

The previous prime is 42442733. The next prime is 42442769. The reversal of 42442743 is 34724424.

It is a happy number.

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

It is not a de Polignac number, because 42442743 - 2⁶ = 42442679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42442743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010521 + ... + 1010562.

It is an arithmetic number, because the mean of its divisors is an integer number (8084336).

Almost surely, 2^42442743 is an apocalyptic number.

42442743 is a deficient number, since it is larger than the sum of its proper divisors (22231945).

42442743 is a wasteful number, since it uses less digits than its factorization.

42442743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021093.

The product of its digits is 21504, while the sum is 30.

The square root of 42442743 is about 6514.8095137157. The cubic root of 42442743 is about 348.8198154187.

The spelling of 42442743 in words is "forty-two million, four hundred forty-two thousand, seven hundred forty-three".