42559513 has 2 divisors, whose sum is σ = 42559514. Its totient is φ = 42559512.

The previous prime is 42559471. The next prime is 42559519. The reversal of 42559513 is 31595524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42146064 + 413449 = 6492^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 42559513 - 2²⁵ = 9005081 is a prime.

It is a super-2 number, since 2×42559513² = 3622624293594338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42559519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21279756 + 21279757.

It is an arithmetic number, because the mean of its divisors is an integer number (21279757).

Almost surely, 2^42559513 is an apocalyptic number.

It is an amenable number.

42559513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42559513 is an equidigital number, since it uses as much as digits as its factorization.

42559513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 42559513 is about 6523.7652471560. The cubic root of 42559513 is about 349.1394177017.

The spelling of 42559513 in words is "forty-two million, five hundred fifty-nine thousand, five hundred thirteen".