42741493 has 4 divisors (see below), whose sum is σ = 42754860. Its totient is φ = 42728128.

The previous prime is 42741487. The next prime is 42741497. The reversal of 42741493 is 39414724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13126129 + 29615364 = 3623^2 + 5442^2 .

It is a cyclic number.

It is not a de Polignac number, because 42741493 - 2⁹ = 42740981 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 (42741497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (10688715).

Almost surely, 2^42741493 is an apocalyptic number.

It is an amenable number.

42741493 is a deficient number, since it is larger than the sum of its proper divisors (13367).

42741493 is an equidigital number, since it uses as much as digits as its factorization.

42741493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13366.

The product of its digits is 24192, while the sum is 34.

The square root of 42741493 is about 6537.6978363947. The cubic root of 42741493 is about 349.6363379197.

It can be divided in two parts, 42741 and 493, that added together give a palindrome (43234).

The spelling of 42741493 in words is "forty-two million, seven hundred forty-one thousand, four hundred ninety-three".