42247593 has 12 divisors (see below), whose sum is σ = 61629828. Its totient is φ = 27885600.

The previous prime is 42247571. The next prime is 42247603. The reversal of 42247593 is 39574224.

42247593 is a `hidden beast` number, since 4 + 22 + 47 + 593 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27594009 + 14653584 = 5253^2 + 3828^2 .

It is not a de Polignac number, because 42247593 - 2⁵ = 42247561 is a prime.

It is a super-2 number, since 2×42247593² = 3569718228587298, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42247993) 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, 22330 + ... + 24147.

It is an arithmetic number, because the mean of its divisors is an integer number (5135819).

Almost surely, 2^42247593 is an apocalyptic number.

It is an amenable number.

42247593 is a deficient number, since it is larger than the sum of its proper divisors (19382235).

42247593 is a wasteful number, since it uses less digits than its factorization.

42247593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46584 (or 46581 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 42247593 is about 6499.8148435167. The cubic root of 42247593 is about 348.2843741746.

The spelling of 42247593 in words is "forty-two million, two hundred forty-seven thousand, five hundred ninety-three".