42681743 has 4 divisors (see below), whose sum is σ = 45964968. Its totient is φ = 39398520.

The previous prime is 42681739. The next prime is 42681773. The reversal of 42681743 is 34718624.

42681743 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 42681743 - 2² = 42681739 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 (42681703) 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, 1641593 + ... + 1641618.

It is an arithmetic number, because the mean of its divisors is an integer number (11491242).

Almost surely, 2^42681743 is an apocalyptic number.

42681743 is a deficient number, since it is larger than the sum of its proper divisors (3283225).

42681743 is a wasteful number, since it uses less digits than its factorization.

42681743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283224.

The product of its digits is 32256, while the sum is 35.

The square root of 42681743 is about 6533.1265868648. The cubic root of 42681743 is about 349.4733385174.

The spelling of 42681743 in words is "forty-two million, six hundred eighty-one thousand, seven hundred forty-three".