42598613 has 2 divisors, whose sum is σ = 42598614. Its totient is φ = 42598612.

The previous prime is 42598609. The next prime is 42598657. The reversal of 42598613 is 31689524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 1868689 = 6382^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 42598613 - 2² = 42598609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42595613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21299306 + 21299307.

It is an arithmetic number, because the mean of its divisors is an integer number (21299307).

Almost surely, 2^42598613 is an apocalyptic number.

It is an amenable number.

42598613 is a deficient number, since it is larger than the sum of its proper divisors (1).

42598613 is an equidigital number, since it uses as much as digits as its factorization.

42598613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 42598613 is about 6526.7612948537. The cubic root of 42598613 is about 349.2463046767.

The spelling of 42598613 in words is "forty-two million, five hundred ninety-eight thousand, six hundred thirteen".