42559393 has 8 divisors (see below), whose sum is σ = 43610112. Its totient is φ = 41514816.

The previous prime is 42559369. The next prime is 42559397. The reversal of 42559393 is 39395524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42559393 is a prime.

It is a super-2 number, since 2×42559393² = 3622603865056898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42559397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14496 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (5451264).

Almost surely, 2^42559393 is an apocalyptic number.

It is an amenable number.

42559393 is a deficient number, since it is larger than the sum of its proper divisors (1050719).

42559393 is a wasteful number, since it uses less digits than its factorization.

42559393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its digits is 145800, while the sum is 40.

The square root of 42559393 is about 6523.7560500068. The cubic root of 42559393 is about 349.1390895591.

The spelling of 42559393 in words is "forty-two million, five hundred fifty-nine thousand, three hundred ninety-three".