42003743 has 4 divisors (see below), whose sum is σ = 42028608. Its totient is φ = 41978880.

The previous prime is 42003739. The next prime is 42003751. The reversal of 42003743 is 34730024.

It is a happy number.

42003743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42003743 - 2² = 42003739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9698 + ... + 13343.

It is an arithmetic number, because the mean of its divisors is an integer number (10507152).

Almost surely, 2^42003743 is an apocalyptic number.

42003743 is a deficient number, since it is larger than the sum of its proper divisors (24865).

42003743 is a wasteful number, since it uses less digits than its factorization.

42003743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24864.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 42003743 is about 6481.0294706937. The cubic root of 42003743 is about 347.6129901880.

Adding to 42003743 its reverse (34730024), we get a palindrome (76733767).

The spelling of 42003743 in words is "forty-two million, three thousand, seven hundred forty-three".