42271613 has 4 divisors (see below), whose sum is σ = 42349440. Its totient is φ = 42193788.

The previous prime is 42271609. The next prime is 42271643. The reversal of 42271613 is 31617224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42271613 - 2² = 42271609 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 (42271643) 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, 38093 + ... + 39186.

It is an arithmetic number, because the mean of its divisors is an integer number (10587360).

Almost surely, 2^42271613 is an apocalyptic number.

It is an amenable number.

42271613 is a deficient number, since it is larger than the sum of its proper divisors (77827).

42271613 is an equidigital number, since it uses as much as digits as its factorization.

42271613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77826.

The product of its digits is 2016, while the sum is 26.

The square root of 42271613 is about 6501.6623258979. The cubic root of 42271613 is about 348.3503677228.

Adding to 42271613 its reverse (31617224), we get a palindrome (73888837).

The spelling of 42271613 in words is "forty-two million, two hundred seventy-one thousand, six hundred thirteen".