42613 has 4 divisors (see below), whose sum is σ = 43648. Its totient is φ = 41580.

The previous prime is 42611. The next prime is 42641. The reversal of 42613 is 31624.

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 42613 - 2¹ = 42611 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 (42611) 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, 453 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (10912).

2⁴²⁶¹³ is an apocalyptic number.

42613 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

42613 is a deficient number, since it is larger than the sum of its proper divisors (1035).

42613 is an equidigital number, since it uses as much as digits as its factorization.

42613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its digits is 144, while the sum is 16.

The square root of 42613 is about 206.4291646062. The cubic root of 42613 is about 34.9285617702.

The spelling of 42613 in words is "forty-two thousand, six hundred thirteen".