42743593 has 16 divisors (see below), whose sum is σ = 47137680. Its totient is φ = 38578176.

The previous prime is 42743581. The next prime is 42743639. The reversal of 42743593 is 39534724.

It can be written as a sum of positive squares in 8 ways, for example, as 5631129 + 37112464 = 2373^2 + 6092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42743593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42743573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136405 + ... + 136717.

It is an arithmetic number, because the mean of its divisors is an integer number (2946105).

Almost surely, 2^42743593 is an apocalyptic number.

It is an amenable number.

42743593 is a deficient number, since it is larger than the sum of its proper divisors (4394087).

42743593 is a wasteful number, since it uses less digits than its factorization.

42743593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 90720, while the sum is 37.

The square root of 42743593 is about 6537.8584414164. The cubic root of 42743593 is about 349.6420640048.

The spelling of 42743593 in words is "forty-two million, seven hundred forty-three thousand, five hundred ninety-three".