42306743 has 4 divisors (see below), whose sum is σ = 42328728. Its totient is φ = 42284760.

The previous prime is 42306731. The next prime is 42306757. The reversal of 42306743 is 34760324.

It is a happy number.

42306743 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 42306743 - 2¹⁶ = 42241207 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 (42306713) 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, 7796 + ... + 12057.

It is an arithmetic number, because the mean of its divisors is an integer number (10582182).

Almost surely, 2^42306743 is an apocalyptic number.

42306743 is a deficient number, since it is larger than the sum of its proper divisors (21985).

42306743 is a wasteful number, since it uses less digits than its factorization.

42306743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21984.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 42306743 is about 6504.3633816078. The cubic root of 42306743 is about 348.4468403443.

The spelling of 42306743 in words is "forty-two million, three hundred six thousand, seven hundred forty-three".