42559623 has 12 divisors (see below), whose sum is σ = 62110048. Its totient is φ = 28080000.

The previous prime is 42559609. The next prime is 42559631. The reversal of 42559623 is 32695524.

42559623 is a `hidden beast` number, since 4 + 25 + 5 + 9 + 623 = 666.

It is not a de Polignac number, because 42559623 - 2⁴ = 42559607 is a prime.

It is a super-2 number, since 2×42559623² = 3622643019804258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42559603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23503 + ... + 25248.

Almost surely, 2^42559623 is an apocalyptic number.

42559623 is a deficient number, since it is larger than the sum of its proper divisors (19550425).

42559623 is a wasteful number, since it uses less digits than its factorization.

42559623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48854 (or 48851 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 42559623 is about 6523.7736778647. The cubic root of 42559623 is about 349.1397184985.

The spelling of 42559623 in words is "forty-two million, five hundred fifty-nine thousand, six hundred twenty-three".