42320743 has 6 divisors (see below), whose sum is σ = 42798392. Its totient is φ = 41844480.

The previous prime is 42320737. The next prime is 42320749. The reversal of 42320743 is 34702324.

42320743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42320737) and next prime (42320749).

It is not a de Polignac number, because 42320743 - 2²¹ = 40223591 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 (42320749) 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 5 ways as a sum of consecutive naturals, for example, 65703 + ... + 66343.

Almost surely, 2^42320743 is an apocalyptic number.

42320743 is a deficient number, since it is larger than the sum of its proper divisors (477649).

42320743 is an frugal number, since it uses more digits than its factorization.

42320743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 42320743 is about 6505.4394932241. The cubic root of 42320743 is about 348.4852717102.

The spelling of 42320743 in words is "forty-two million, three hundred twenty thousand, seven hundred forty-three".